Welcome to the forum. I'm not one for giving advice on mixing and matching components but I do have the larger models of what you are considering. I have the S-244T (300#) and 1 HP superpump. Your models are listed in my manuals too. Looks like a good match. Your 250# filter and 1/2 HP. Absolutely no reason not to use IG equipment on AG pools. From what I've heard on this forum IG equipment is generally better constructed. My equipment is inside a poolhouse so it's protected from the elements but we do get cold in the Winter. Equipment is on its 9th season now and just bought a $5 gasket for the pump and had to replace the variflow valve gasket once too. Can't knock the durability of my IG equipment. Spend the extra $100 on the pump.