Help stocking

[karazy]

well i i ahve hit another block n my stocking plans. i canot decide what sort of goby/other i should get, or if i can have a fith fish which would be a yellow clown goby. is going to be a 29 gallon reef tank with a bout 11 gallon sump.
so far on my stocking list i have:
-2 clowns(percula or occelaris)
-1 cherub angel
possible others:
-hi fin goby
-rainfords goby
-spotted prawn goby
-royal gramma

and then theres the issue with can i add a fith fish which wud be a YCG
so just pick out of the list or suggest something else

help is very appreciated

p.s. i like fish for mostly their personality, but their color too