$5k to $7k starting from scratch would be a lot of fun.
You will get a lot of suggestions. You have many paths you could travel.
Do you need to also do Home Theatre with the same gear?
Room size and what kind of speakers first. If the room can handle them I would try the Magnepan LRS+. That leaves a lot of budget room for the rest of the gear. I assume you are "downsizing", so stand-mount speakers may be more appropriate.
Do you like horns? Maybe some little tube amps and high efficiency speakers?
Apartment? Big sub-woofers may not be a good idea.
Warm or resolving? Loud or quiet? CD player, NAS, streamer, or vinyl?