Don't waste money on REL. Very bad performance to cost ratio.
Seriously, WHY LIMIT YOURSELF?
Acoustics are what they are, you either work with them or they fight you. If you are going to spend money in this hobby, do it with the intention of getting the best performance. If you opt for aesthetics first, then why care about any of this?
If you have the desire to build a good quality rig, don't stop. Do it well, do it right. Approach your room with fresh eyes... AND EARS.
And for the love of all that's holy in Sound Reproduction, DO NOT PUT YOUR SUBS IN A CUBBY.
(We won't be friends if you do.)