Hello all! So a buddy of mine recently gifted me his SB1 - Black Klipsch system. 2 R/L, 1 Center, 1 Sub, and 2 Bookshelves. I just purchased a Denon AVR X3700H receiver and definitely want to build this system in the next year, especially when my wife lets me build my man cave, haha. Once that happens, I want to add more speakers obviously. 2 Atmos, 2 more surround front, and 2 more surround back if possible (goal is 9.1). Again this is all new to me, but I was told Denon could handle it so don't fry me if I'm way off on what I can add. Biggest question, and from what I've researched is it'll be ok, but can I add these speakers in the form of the newer Klipsch models, or would I be better served to get the usage out of the current setup I have, then go all in at a later time? Also, I want to run 14AWG to my surround speakers. Everywhere I read says 16, but I'm curious if 14 would be better since it offers less resistance. It will be less than 50 feet also. Thanks everyone for any advice.