I run the same cooler setup on mine. I contacted Psc and the guy on the other end said it wouldn’t be a problem. My cooler is 3/8” and I think the Psc uses 1/2” return lines. Changing to the Psc cooler in the kit would require reworking the coolers.
My Jeep is on 35's also, it won't steering very well when all bound up crawling around, I'd just like to address that Mercedes-Benz gear box now that I know about it.
Currently I'd like to keep it around 1500$ on the steering, if I'm buying the Gen-right sides.
I don't see any issue using a New PSC high flow pump with reservoir. and the new PSC big bore gear box. That puts it around 1500$ plus 1000$ for Gen-right sides. All cause I went to the OHV park for the day....
Then add the ram And lines later, and possibly use the black magic psc cooler and line kit.