Well I haven't used Chemical Guys products just to let you know.
My go to polish with the PC is Poorboy's SSR2.5 with a polishing pad with the speed cranked up to #6. This will bust out some major swirls and scratches and when worked in properly you could even go right to a wax or sealant. The SSR line is easy on and easy off. If you do go this route do not prime your pad with water or QD, the polishes don't like that and that is where a lot of users get dusting issues. You can't go wrong with SSR2.5 and SSR1 combo with the PC.
I've tried Menzerna FP and IP with the PC and the results aren't near the SSRs. Even optimum polish was difficult to remove with the PC. I think this is because these products are designed to work with a rotary and have oils that allow the product to be worked in for a long amount of time which is good with the rotary but with the PC the polish may not break down fast enough = making it hard to remove. Just my experiences.
As for sealants and waxes- any product you hear talked about on this forum a lot is good... whether it is EX, EX-P, JeffsWerkstatt, Zaino, Sonus, Danase, Four Star, P21S, Finish Care, Optimum, Pinnacle, Wolfgang, DP... and the list goes on.