Spend my money and some silly questions...

[Thebenz]

I am really wanting to get away from the 7ch home theater blah blah now that I'm moving and, I know all of you want to help me spend money!

For sources, I really just want to end up with my sonos connect, a turntable, and maybe a music app, pandora/amazon music via amazon box. I do also have a SACD player (oppo).

I would like to have a pre-amp and plan on selling my MC300 for a pair of 501's to push my Klipsch Ref 7's.

Q1. I've been reading up on all the preamps and it seems the c47 might be a good fit for this setup? or the C50? I don't want to spend crazy amounts of money.

Q2. My silly question is, with a preamp, can I still run a subwoofer with this type of setup or is this taboo? (fixed output??)

Any tips or advice is very welcome!
Chris