How to set up a system?

The beginning of your flow chart just says cd/phono what components are these? You have an excellent Dac you can run a cd transport into it if you have a digital cable. There is no mention of a preamp you will need one to control volume unless the 30.5 dac has a volume control. That still won't help you with phono you would need a preamp/phono stage to play records.

Have someone knowledgable help you while explaining to you what he’s doing and why...

If you can find someone off this site close to you, they’d probably do it for next to nothing.  I ask for beer, pizza and $100, lol!

To Jond: Thank you very much for your reply. I have since acquired an AR SP15 pre-amp & power supply,

To: b_limo,

I appreciate your advice and have already begun the search for a local expert,