New 30 gallon tank

Well I've finally made my first step into starting this hobby. I guess this could be considered my first log. I went out today and bought a 30 gallon tank that came with lighting(not the best but I don't plan on corals for a LONG time). I get paid within a week and a half to two weeks and I will go purchase the filter, heater, power heads, live rock and other accessories I need to start up.

Without me babbling any longer, here are some pics. My brother snuck into my room and poured all the sand in while I was outside. Hopefully this isn't bad. Also, where it is sitting is only where it will be sitting for tonight. I'll be moving it to a new stand tomorrow.

Thanks. The guy at my LFS told me it was a 30, so I'll believe him.

Hm any opinions on what to stock it with?

All I know for sure is that I want 2 clowns. My brother wants a longnose hawkfish but I told him that was out. My girlfriend wants me to get a Royal Gramma, so that could be a possibility.

What about:
2 clowns
Royal Gramma
Yellow watchman goby

Another question. Is it bad that my brother put the sand in the tank?

That's what I thought. I'll have to make sure my brother doesn't do anything else without asking me first though.

I took a trip to the LFS today(my g/f needed new gravel and I'm not gonna turn down a trip there) and they had such a cool dragonette. I could have watched it for hours but she was getting mad

Anyways, she decided that she wants me to get a coral beauty angelfish. Would this be ok to put in my tank considering I don't want a reef anytime soon? On live aquaria it says a 30 gallon minimum.