Nocturne Jungle Clear (Invade)

OK so i have been practicing invading red buff from blue side with nocturne for a while now and would like some input. (note. this is for scenarios where i do invade, at my elo it is rare that people check or ward their buffs) This is how it plays out I go precision with lethal tempo, Presence of mind, Alacrity and coup de grace (changes slightly on matchup) 2nd i go sorcery with celerity and waterwalking (also depending on matchup) I take Hunters Machete, Refillable Potion and ward I start q first

I ask my bot to ward my red at 1:15 just so i can have eyes on their jungler if he invades I sit in pixel bush till about 1:15 so that if the top laner is guarding the buff he leaves for lane by then I move into position around 1:25 (if the enemy jungler is there another scenario plays out but im looking for input on times and pathing) Start enemy red buff @ 1:30 clear at 1:45 using smite upgrade W 4 seconds to move to enemy raptor camp Start raptors @ 1:49 clearing it at 2:05 9 seconds to walk to scuttle Start scuttle @ 2:14 clearing it at 2:29 5 seconds to walk to blue buff Start blue buff @ 2:34 clearing it at 2:54 Upgarde E 3 seconds to walk to Gromp Start gromp @ 2:57 clearing it at 3:13 (kite gromp to cut time one walking to wolves) 3 seconds to walk to wolves Start wolves @3:16 clearing at 3:25 11 seconds to walk to raptors Upgrade Q Start raptors @2:36 clearing at 3:48 4 seconds to walk to red buff Start red buff @3:52 clearing at 4:02

Times fluctuate between 4:02 being the fastest to 4:07 I end at level 4 1/2

Is clearing the enemy raptor camp (leaving 1 of course) worth it? or is taking the buff good enough how far behind am i putting the enemy jungler by doing this clear? Is my pathing correct in this situation? my goal usually is to get to level 6 as soon as possible and either really bully the other jungler or go bot/mid depending Im a efficiency freak and would really love to get my pathing down to a science

Thanks!