If you really do care about music then you really do owe it to yourself to go and compare. Specifically, you need to go and listen and compare what your money will buy you in a good stereo integrated amp, compared to whatever it will buy with surround. Because I can tell you right now you absolutely shoot yourself in the foot and kill any chance you might have had at good sound when you go surround. Absolutely kill it. Forget about it. Stick a fork in it. Done.
Why? Well for starters you're spreading the same funds across way more components. Sound quality is primarily about quality. Not quantity. The only place quantity matters is with bass. You do want four subs. Not two. Four. Its called a Swarm or distributed bass array. Do a search. Kind of money you're talking you definitely want this. Everything else you want 2Ch. No surrounds. No center channel. Good stereo already gives you a rock solid center image. Stupid to pay money for a speaker and amp for what two will give you for free.
Second big reason you want 2CH is the sound quality is so much better. Just look at that Mac processor. Look at how much stuff is crammed in there. Every single one of those parts- power supply, processor, all of it crammed all close together. The noise from one going right into the others. Yeah they try and tell you shielding, isolation, separate this separate that. Right. Go and listen. You will hear the difference. There are no surround anything's that can touch 2ch, not without spending five, ten times, maybe not even then.
Don't take my word for it. Go and listen. You will see. I sure did. That's why my solution is this
https://systems.audiogon.com/systems/8367 And I tried and tried and tried. At one point I had full range surrounds, the works. Was so blown away by how much better stereo sounds its not even funny. Got rid of it.
You said one and done. Good stereo integrated, good pair of speakers (Tekton, awesome) four good subs. These right here will save you more than enough - while sounding better! - you will be able to afford way better cables and conditioner, things that will take a system that already outperforms anything surround can do and takes it to a whole other level.
Sorry, but I am so sick of the way marketing and CW has brainwashed everyone into thinking everyone needs 7ch to watch a movie. What you want with a movie, 3D soundscape to lose yourself in, you get better with what I'm talking about. Not even close. Go and listen. You sill see.