Need advice on building a system from a mishmash of components!

Thank you very much for all your time and experienced advice. 

In response to Grisleybutter, some of the items (e.g. Adcom) I have had for many, many years, other items were recently gifted to me and I have not had the opportunity to test them all.) I appreciate your advice on quality - and maybe selling it all for a $1,000 integrated amp.  But first I am going to play, er...  experiment, with what I have - as many of you suggested.  After all, the Mac was recently refurbished and the speakers are like new.  

Yes, GHDPrentice, I agree - I am lucky to have these options.   

Thanks to all of you - your advice was helpful.  Clearly I need to stay up late for some experimenting!  Given the small size of the rooms in my 100+ year old house I think the Maggies are out.  Radio reception is terrible where I live, so the Pioneer is out as well.   Likewise, the cheap sub will be out.   And the Niles, although reported as good quality, will probably be out as well since I won't be using it, and someone else might.

 I am going to research phono--outs for use with the GTA into the Mac to learn how that sounds. (Thanks Russ69, I had forgotten about that option.)  I might have learn about tubes next.  I'm sure the single tube is pretty old.   I have already paired the Adcom with the Mac, so I will see which I like better. Since the B&Ws and Totems are like new, I will keep both sets.  

I'm not sure about the Super Cube 3 sub. More experimenting.  The cheap one is out.

And yes - I will start saving to replace the sources - the Rega and the TT.  They both have a bit of mileage.

Thank you all again!  

sorry I didn’t mean to be harsh. I am easily confused :)

You will have a lot of fun playing with your toys. I myself hoard cheap speakers, not sure why. I just got cured of hoarding old integrated amps.

For a phono stage, I just tested 3 of them and found good options under $400.

My dream some day is to buy and sell used audio and use the profits to upgrade my system. You have many items that would be very appealing for people entering the audiophile Universe.

G- no offense at all.   My first time on a chat and still pretty new to audio world. Although I'm getting old!  Thank you for your advice.  Any tips for looking at outboard phono stages?   Good luck with your dream.   I hope to do biz with you in the future!

@scooneytunes 

so my budget was around $500. I found the Moon LP110 v2 the best deal. Had a post about it too. 

My sense is that for a $1000 turntable, it's not worth spending $$$ on a phono stage. From what I read, the entry level Parasound, Musical Surroundings, Cambridge Audio, Schiit all do a great job. 

Yes, we should cross paths in the World of magical vintage gear!