I’m excited for you mate, i’ve gone for 1x 100/50 for my 4 330w trina’s. I’m still tossing if i’ll wire them in series parallel or just parallel. I can always play with the setup after in terms of the wiring.
So far from my limited testing (on an AC200P in the RV) there hasn’t been any major shading issues. The performance has been really good even in winter. I also prefer not to have a huge bunch of wires coming down from the roof if i’m honest (i’ve got two charge controllers one for the front flex panels)
However I’m sure your multiple charge controller setup is going to be the best in terms of pure performance
I was going to use larger panels like you but didn’t want the panels overhanging the side of the GMC and spoil the looks. Are you concerned about this? not say they will spoil them but they are about 8 inches wider than mine i think