u have to reread the manga because u made it seem as if things were getting better for him without them because it wasnt getting any better and would only get worse...he was glad they came and u do realize whether he used kamui or not from the start he would have still lost because st can disrupt it and kakashi couldnt touch deva pain anyway, deva painwas even physically stronger and faster than kakashi...
I constate the fact, i'm not speculating like you by jumping into biased conclusion, the facts before Choji clan came was :
-Ashura paralyzed and unaware of Kakashi's location
-Tendou unable to us ST and unaware of real Kakashi's location
-Kakashi raikiri on hand who could com from underground anywhere with surprise attack.
-and still have kamui to warp them if needed.
This is called awesome strategy and far to worse like you're trying to say.
Now let's see CHoji's clan come :
-Wasted Kakashi's plan and now need rethink a new plan that will cost chakra
-Was unable to kill Asura path
-All what Choji's clan did is to throws kunais and using chain to win time
-Kakashi even had to use himself to tank an other ST and despite it CHoji and his dad's attack -was too slow and here Ashura is back and an other ST on Kakashi because they were too slow
-Instead of keep calm, Choji make himself noticed and again Kakashi had to use kamui to sacrify himself.
That's what happen when you have to babysitting, also worst situation than when he was alone.
All what you wrote is speculations, own opinion i can't take your posts seriously.
You should bring fact and let fan fiction aside.
kakashi tried to use raikiri on deva at the start of the fight and kakashi looked into his eyes and shitted on himself and deva weaved the raikiri...did u forget that
Nobody had knowledge of ST, Kakashi did well to put a doton wall and intentionally get a stab to block him and kill him with raikiri.It's the black metal things that disturbed his chakra reread the manga.
The point was that raikiri Yes direct attack won't work and he was unaware of the 5s things about ST.But later Tendou was unable to use ST for 5s and unaware of Kakashi's location who was going to raikiri him with surprise attack.