I am starting a renovation this fall where I am replacing my decking, liner, plumbing and adding an SWG. My system is pretty simple with 2 returns, skimmer and suction port. I was planning to run 2" pvc everywhere I can. Any thoughts on the plumbing layout? Any tips on doing the plumbing? I have done some minor plumbing but this is a much bigger job than I have tackled before? Where is the best place for the SWG? I was thinking between the union and the T from the skimmer/suction. I am replacing the skimmer as well. Does it matter much whether that is 1-1/2" or 2" and are there any advantages between them. Anything else I should consider while redoing the plumbing here?