I just wanted to say that I purchased 3 more Harlequins for a total of 5. I'm really glad I did, they are so much more confident and fun to watch now.
While I was at the lfs I talked to my favorite employee who said he liked the idea of gettting some cory's and some oto's better than clown loaches and the shark. He's got me on a "fish-installment" plan now. Also, I'm going to give the whitecloud and the 2 danios to my roomate, who has recently completed cycling his new tank.
Anyways, I just wanted to say thanks to all for the good advice. It was a big help.