Actually, it is looking very likely that instead of going smaller I am going bigger! A couple advertised their tanks on a local website. They have a 110 and a 55 with all equipment, stands and fish for $550. A friend of mine has been wanting a 55 and it looks like a 110 also has the same footprint as a 75, but is more versatile if we decide to keep something other than Mbuna in the future. We are going to check them out tomorrow.
The only problem is the fish. I know I can rehome them even if it means giving them away to the
LFS, but I made a BIG mistake! The tank comes with two large Frontosas. I told my husband (who knows very little about fish) about them and showed him a picture from a website. Now he wants to keep them! The good news is that I may have a 200 gallon tank in my future, but in the meantime I think I need to visit the stocking forum.... <sigh>