I'm running EV-X legal too. KW coilovers, MPP FUCA, rear camber arms, 265 RE-71's, eibach sways.
I generally set FTD raw at my AutoX- against GT3's, fully striped/supercharged S2000's and M3's, even against some odd things like karts, all on Hoosiers.
I can only get about -2.3° out of my 2019 MPP FUCA's, but that seems fine for the RE71's. I actually run the smallest shim- when I took them all out I swear I ran slower and the car had less grip.
For AutoX, I have found the stock brakes just fine. Stock pads, stock rotors, etc. Yep, they turn blue easily, but they never fade on 70 second courses with 3 runs back to back, and 90 MPH top speeds. I find the pedal remarkably firm and consistent. I've let some of the local instructors and fast guys run my car, and they have all commented at how good the brakes are and how it took them some time to gain confidence in them as they didn't expect it. My pads probably have 150+ runs on them so far and are about 2/3 used up. I'm going to try the RB XT910's when they're done because I want a street OK pad, and I'm cheap
The brakes do pump a ton of heat back into the tires- after 3 quick runs, you cannot touch the wheels with bare hands, and tire pressures climb over the next hour.
The real fun of a Model 3 is when it rains- Run your stock MPS4's, and nobody can touch you. I've run FTD by 5+ seconds in the wet.
My real learning (and those of everyone that has driven it) is that you drive a Model 3 differently- it's a point and shoot car. You have to learn to use the acceleration and braking. Get the turn done, and on the power ASAP, even if you have to go through the corner slower. I actually accelerate and brake between slalom cones. Everyone that rides with me says "well, you could be smoother" and then they drive smooth and are a second slower. By the end of the day, they're driving like maniacs too, and going faster. Carrying speed through corners where your turns are wider and you can't get on the power sooner is just hurting you because you can accelerate so fast. Shortest path, longest time on accelerator wins.
Plus, look at your G-meter when you're done. If it's not almost a perfect circle at around 1.2-1.4G's, minus a flat spot on the bottom where you can only accel about 0.9G, then you've got some performance left in the car that you haven't used. I've noticed in new drivers that their traction circles look more like a + than an O, only using turning or braking.