20-30 damsels or cromis in a 120 reef?

[eli@fijireefrock.com]

i am thinking to purchase about 20-30 :eek: mix of damsels and chromis fish for my 120gln reef.
by the time the fish will be in,the tank inhabitant will be the damsels of course over 100lb of live rock a single yellow eye one tomato clown.aprox 20-30 :D soft and leather corals some sps and lps.so tell me if i am wrong there will be enough room hiding space for all those fish.or should i go with 10 tank raised perculas. :confused: