How about 8 neons and a betta and you wait until you develop algae to pick up an algae eater. If you have live plants in teh tank, you could very likely not have an algae issue. If this is the case, you would have to supplement any algae eater. Also, I wouldn't put a pleco in a 10g, they produce too much waste. IF in the future, when teh tank is well established, you had algae you could consider otos.