I'll also throw in the Omega speaker recommendation. If your friend is handy there's a ton of 6" and 8" kits that would foot the bill and is pretty cheap. Madisound has a few kits using Fostex Drivers which are really efficient. THe other cool part of single driver speakers is they can be pushed into a corner to help with bass. I started with mine in the corner and started to pull them into the room until it suited my taste bass wise.
Here's a link to the Madisound Kits
https://www.madisoundspeakerstore.com/full-range-speaker-kits/
Here's a link to the Madisound Kits
https://www.madisoundspeakerstore.com/full-range-speaker-kits/