It seems the panels are gone from amazon but they’re still on eBay.
2 160w solar panels I paid $150 each.
Genasun waterproof boost charge controller $180. Little pricey but completely waterproof keep in mind this charge controller maxes at 325 watts so there is no room for expansion or bigger panels.
I thought I needed 10 ga wiring for the panels but that’s completely overkill. I would go with 12ga if I did it again.
3/4 x 3/4 aluminum angle $22 Used this for bolting to two panels together. Would go with 1.5 x1.5 angle. $42 just so it’s a little more ridged. Mine flexes a little bit and I’ll be redoing it with 1.5
I have ammeters with shunts monitoring the power in ($18) from the panels and power out ($23) to the motor. Not really necessary but I like it. These also show me the voltage so I can keep and eye on the state of charge. If you don’t use these I would highly recommend at least a voltmeter ($11) just so you know the state of your batteries
With all the various wire I had laying around terminals and hardware for bolting the panels to the cart. it would come out to around $600. Minus 50 if you don’t want the monitoring capabilities.
I’m on the Texas coast so I’m not far from you.
I plan on doubling the panels so I’ll have 640 watts. Adding a 36v inverter and powering things in my house while it’s parked. So it’s like a massive “solar generator” that I can drive around.