@nyev :
I’m going to really going to enjoy my big fat 10AWG wires with lower resistance, enabling more rapid access to glorious peak current, all for like two hundred bucks extra, give or take.
Good decision. Best of luck with the project and install. IMO, the peace of mind alone by doing 10 AWG, no regrets down the road, is totally worth the extra two hundred bucks, regardless of whether it makes a difference in theory or practice