Let me say.. You will LOVE your albino BN pleco's! I have one and I love it. I'm kinda biased... But I got a Bolivian ram on Friday and I am in love! Also I think you could do some species of cories, their so cute and always active, their a favorite here
have you heard of aqadvisor.com? It's a good site to use as a guideline (GUIDELINE, don't use it like a bible or trust it 100%!) to give you an idea of if your overstocked and any potential compatibility issues you may have. You definitely have the room for bolivian rams if you wanted to give them a shot. Here's a picture of my guy
they are very peaceful, I have him in with 6 serpae tetras, 2 platies, 3 platy fry, 1 balloon Molly, 1 albino pleco and 5 cories in a 30g.