Recommendation on Towers, Center, and Subwoofer Under $2k

I have a 24x24 room I’m looking to upgrade from a soundbar and an okay subwoofer that I’ll move to the basement. The room isn’t wired for surround sound, but I’m hoping to take the first step towards a 5.1 system by getting a couple towers, center speaker, and subwoofer for under $2k in total preferably.

I have an older Yamaha EX-V381 reviver that I’m hoping won’t limit me.