Kakashi starts his battle off with either a subsituation or shadow clone. He also has knowlegde of FTG, so he might have some counter strategy being that he is a former student of Minato. I didn't say he would used those techniques in battle I just assumed he would to counter. It's all speculation based on knowlege and opinion.
This is really sad bro, you are living in denial. Snap out of it.
You think some lame kage bunshin trick would work on minato? One the smartest, if not thee smartest character on the series? Not withstanding that he obviously knows how to use the kage bunshin too and can use it a lot more times than kakashi because of his monstrous reserves.
Fact of the matter is that we have never seen kakashi defeat ANYONE in the manga, except maybe zabuza, after he was SAVED by sasuke and naruto.
Ninjutsu is useless if you can't hit your opponent, Kakashi can't form handseals against Minato, people can't even form handseals against the raikage's top speed and Minato is even faster than that, his one thousand jutsu will be useless. And as rock lee said and proved against sasuke at the chuunin exams, being able to perceive the attack and movement with the sharingan is useless if the body itself can't keep up, what's worse is that not only will kakashi's body not be fast enough to react, but his sharingan won't even see his movements (sasuke couldn't follow the raikage's movements when he went V2 armour, hence the sasuno and ameterusu shield and minato even faster, bare in mind that those two jutsu didn't require handseals).
Kamui, that is the most useless jutsu in against Minato, good luck transporting someone into another dimension when they can just transport themselves back with his own space time jutsu in kick your ass when you're on the floor from chakra exhaustion of using Kamui.
Good luck transporting someone to another dimension when they can just out right avvoid the jutsu before it succeeds with his sheer reaction time and speed, Kakashi can just go ask Tobi about his 'success' with that kind of attempt.
Good luck on taking on Gamabunta, Ma, and Pa AND one of the greatest and by others regarded as the greatest shinobi of all time.
Even if by some miracle Kakashi pulled off handseals and did a jutsu, that would be utterly useless, ALL jutsu are useless against the guy who can just transport the jutsu to another place or back at you with ease. (He transported the Kyubi's Tailed Beast Bomb with a mere clasp of the hands together with his space time barrier jutsu before he summoned gamabunta).
A guy who can transport the Kyubi's TBB won't be affected by any ninjutsu except maybe earth based, since they come from under the ground, but even then, his insane relexes, reaction time, speed, and ftg will sort that out.
The fact of the matter is that the difference between these two warriors is like the gap between heaven and earth, Kakashi won't be able to take on Minato, Gamabunta, Ma and Pa, Kakashi's kamui is useless against Minato for reasons we all know, Minato beat A and B, beat Tobi and the Kyubi, and took singlehandedly forced Iwa to retreat, Kakashi only beat Zabuza and no one else, and he needed his two little genin to save him before he did, Kakashi's 1000 jutsu are useless here for reason explained above, Kakashi is smart but not as smart as Minato, at the least they could be the same level, but even then, I would be giving him a lot of free points to put him there, this battle is over.
RASENGAN!!