Fighter / Marksman / Mage Champion Idea?

I'm reposting this with pretty much the same content under a different title because I realized that "Champion Idea" is pretty vague.

Gomoe Master of the Warrior’s Way—Champion Idea

Gomoe is an Ionian Champion with a strong focus on versatility. She switches between being a speedy, skilled, somewhat beefy melee Fighter specializing in building up her strength the longer she’s in action to deal physical damage then deliver a decisive ending blow, and an immobile high damage Marksman/Mage who builds up range and magic penetration the longer she goes without taking damage or cc. I imagine her as being slightly sorter than average, being very pretty in the face and having a very fit, well-developed, beautiful figure, but being quite modest and usually wearing heavy samurai-esque armor. She’d carry a long sword on her hip, a spear in hand, a magical bow on her back (which is why her arrows can do magic damage), and a quiver on her other hip. She is an honorable, strong willed person and fiercely loyal friend who embodies the warrior’s spirit. She was born into a distinguished family even as an infant she showed downright unnatural physical strength, and, despite being ashamed and scared of it as a child, because of her nature she knew early on that it came with great responsibility. She chose to make use of her physical strength by learning to harness it with intense training in skill, strength and speed. She learned to use the conventional weapons given to any other foot soldier—the sword, the lance, and the bow—but her natural physical abilities allowed her to use these to the fullest and beyond. Gomoe uses weapons because she fears she would come to value life less if she knew how easy it would be to end one without needing to use something outside of herself. She values life and balance, but fights without hesitation if it is for the right reason. Maybe it would be funny if she was a bit of a Neat-freak and was OCD about organization and being prepared (trust me I know the struggle).

Secondary Bar: Pulse and Focus

Passive: Plan of Attack When Gomoe approaches an enemy or combat she is given the choice (a clickable pop-up sorta like Kha'Zix's evolve) to go in with her sword and lance, or to go in with her bow. Can only switch again after not being below half health for a while (not effected by CR). Cool down timer is paused if she is below half health. 40% of her Lethality is converted into a shield after not taking damage for a while (cannot exceed 10% of her max health). Sword and Lance: Gomoe unsheathes her sword and draws her lance to deal physical damage in melee range. Gomoe’s AP is converted into AD (overall AD is reduced by 10%), 50% of her MP becomes Bonus Armor and the other 50% becomes MR. While using her sword and lance Gomoe gains Movement Speed, Attack Speed, and Health Regen for every stack of Pulse. Being on the battlefield causes Gomoe’s heart rate to rise, causing her to gain a stack of Pulse for every 10 sec she is in or near combat (max of 7 stacks). Bow: Gomoe sheaths her sword and puts her lance away to use her bow to deal magic damage. 25% of Gomoe’s bonus armor is converted into AP. 50% of her Movement Speed is converted into MP. Gomoe’s basic attacks deal additional magic damage based on her AP, but the extra magic damage dealt by her basic attacks is reduced the farther the target is. Gomoe’s basic attacks and abilities gain range for every stack of Focus she has. For every 15 sec Gomoe goes without taking damage or CC she gains a stack of Focus (max of 7). Abilities consume Focus. Ultimate is not available.

I don’t have clear ideas for her basic abilities and I don’t have the time to think up an entire kit, but I do have an idea for her ult.

R: Death Shower Assault Gomoe imbues her lance with her chi channeling briefly then throws it to a target champion or monster anywhere on the map deals some physical damage, impaling the target, rooting them on hit and briefly fearing enemy champions near the target. Gomoe then channels while she sheds her armor (literally taking her top layer of armor off as well as loosing 90% of her bonus armor for 30 sec) before she dashes to the rooted target damaging all units and structures hit along the way except for allies and deals decent physical damage to the target with her sword and unleashes a hail of arrows dealing 100 (+90% of her bonus armor) AOE magic damage around the target. Consumes 7 Focus and 7 Pulse. Afterwards Gomoe is briefly stunned and silenced from exhaustion, then gains a short burst of movement speed and is automatically returned to her melee form. Passive: Gomoe’s overall damage is reduced by 5% for every 400 health she has. (before you ask, I think she does this by slashing with one hand, holding her bow out with the other, and pulling the string back with her mouth. I know, after I came up with it I was like "Wait...How?" and that was what I thought of...)

OK clearly this could be very broken, but I think it could easily be balanced out by an adjusting of numbers. Maybe these stats would work, but I don't know. I didn't really take time to do any math beyond "That's higher" "That's lower" "That looks like a good number." What thoughts do you have? Any ideas for her QWE?

Interesting potential Lines: Upon killing an enemy assassin (like Talon or Katarina): "Surely you knew that those who live by the knife die by the sword." Joke: "They say I'm too serious and organized to have a sense of humor...Non-sense! Starting now, I shall commence telling joke number one..." "Why did the chicken cross the road? First one must consider what the other side had that the previously chicken-occupied side didn---...Oh." "I'm funny. I swear it..." When a nearby non-Ionian Champ laughs: "(Gomoe gasps) EEEEEEEEEE! They laughed! I can't wait to tell everyone back home!"