I'm already planning to have a robust inverter and battery stack offgrid and do all the actual solar panel wiring myself. They're going to be thrown in the field face up, and if they have problems, I'll just add more or replace dead ones. $0.31/w is actually kind of expensive, you can get crappy clearance used panels for more like $0.15/w or even less if you shop around (shipping is the largest expense at that point!)

Does it even make sense to set up racking for panels that are ~1/4 the price of a rack, even if you are using ballasted cheapo racking?