2000.5 club car ds suggestions

[Gpsfamily]

Hi everyone. I am in the process of building a club car ds for hunting and yard work. I have just installed a 6 inch lift and 22” tires. I also just dropped in NAPA batteries that were pulled out of a beast 48 cart that are about a year old. I am looking at swapping out the controller for a fsip 500 or 700. My question though is does the solenoid or f/r switch need to be changed also? (What all needs to be changed to support 48v and 500-700 amps). Also, if anyone is familiar with the fsip controllers, how much of a difference would the 700 make over the 500? I’m not currently looking to change the motor. I plan on running the stock motor till it fails me.

I built a 97 txt a few years ago with an alltrax 400 controller and 8v batteries that would lift the front right tire about 3-4 inches on takeoff lol. Wish I had of kept that one.