$50k - $80k Budget…Opinions please.

With a budget like that, if possible, seek a good dealer or three, and listen to complete systems, not just individual components hodge-podge. Then start narrowing down likes/dislikes, and whatever requirements you need for your system. Then, demo a few systems in your own home/room. 

This all may take longer, and more effort on your part, dealers certainly at this price range should have no problem(?) allowing in-home demo-at least I would make it a requirement to do so! Only you know what you like! And the main thing, have fun when you do it, enjoy the process as much as the result!

I agree with others.  This will require a lot of leg work, and that is part of the fun.  For that money you have to listen.  The upside is that you know what you like and have a trained ear so I think you will know it when you hear it.  You may likely be able to get an amazing system that you are very happy with for much less then your budget.  

Check out the YG Acoustics Vantage Live.  Perfect for you. 

think preferences thru before reviewing specific equipment:

1. tubes or SS: TUBES,

both preamp and amp, or integrated. 

2.  speakers: EFFICIENT, to keep power need down, heat down, size down, increase flexibility of placement, remember line of sight of any remote beam.

3. type of drivers:

Horns and Big Woofer, no ports;

no horns, lots/enough bass, no ports;

no horns, no ports, stereo pair of subs.

f. Features: many or purist. i.e. Stereo/Mono; Remote Balance; fletcher munson 'loudness' eq for very low listening; some defeatable tone controls; tape loop; dual output

g. Vintage or New or mix.

h. Phono, a big category, keep options and future options, and flexible gain/flexible impedance in mind. SS or Tubes? TUBES

i. Turntable: DD or belt or idler? Plinth size to fit Long Arm

j. Tonearms: Single, Two, Three {MC, MM, Mono ready to go back and forth in any listening session

Here's what I'd consider

Speakers: SF Olympica Nova 5 (~$20k)

Amplification: Moon 860Av2 (~$20k)

Preamp/Network combo: Moon 390 (~7k)..the new 791 (~$16k) could be interesting

Roon Nucleus with internal hard drive (~$2k)

If desired turntable with isolation platform (e.g. Rega P8 {~$5}  with HRS platform {$1,5k})

Speaker cables ($2k), interconnects ($2K) and power cables with power distributer ($3k) with circuit guard (Shunyata power, Nordost/Transparent/Kimber speaker cables & interconnects)

Audio rack (~$2k)

Stressless Recliner ($3k)

But that's me...