Poppy as bruiser, can you help with that?

so we all know is good tank, she has 15% more armor and MR from W passive and doubles that under 40%hp, that makes her realy tuff nut to crack. i want her to build bruiser-2 or 3 damage items and rest defensive(Sunfire, dead mans, iceborn or randuins vs ashe, trynda and yasuo and Yasuo loves crit, becouse of he's broken passive. doubling crit is like giving win for enemy team right away if you dont buy randuins every time) so i want to get full build for bruiser Top Poppy. as i said 2 or 3 damage items and rest is defense which changes depending on enemy team i know boots is must have for her, she lacks reliable mobility. only her W is speed boost for few seconds. so ninja tabi for sure. i think something about black cliever and one item with lethality..maybe. i dont know. armor pen for her is usualess becouse she doesnt do a lot of damage but for bruiser build last whisper could help. what do you think? i have mastery 5 on her, i suck with team fights so i usualy split push and R away if i get cought while pushing for tower and wave push is weakness for her( except hammer shock which eats a lot of mana early game)

i want to get some kills finaly with my favorite champ in a game. second favorite is camille.

my classical combo is auto(i get passive shield) E-Q-W(if gr8 escapes)-R-E-Q and couple autos in middle. and then i think enemy should be dead. but usualy they walk away with 40% or less HP. i run 12/0/18 with grasp of the undying. i never did anything with runes, i want to make first rune page for her too. can anyone help me with that too. i am lvl30 unranked. i play just for fun and maybe ill try ranked when i get courage to do it.