Most soft and LPS are more forgiving and might be a better choice for you at this point. Have a look at some of the different types of corals availabe and decide on what it is that you want to keep.
http://liveaquaria.com/product/aquar...lies.cfm?c=597
With enough T5 you can keep anything up to a certain depth. Check out this guys all T5 tank:
http://reefkeeping.com/issues/2008-07/totm/index.php