OVERSTOCKED??

[Strickland_673]

Ok so I have a 25G tank with about 25lb of base rock and 5lb of LR, I have a Rena xp4 running carbon, phosban, Nitrate sponge(Kent), and LR rubble. I have a POS Seaclone skimmer (which hauls out some nice dark skimate)
and 1 power head and soon getting a Hydor Koralia Evolution either the nano or 450 model.

My question is I currently have a coral beauty, 2 oc clowns. I was wondering if it would be over stocking if i got a purple dotty back, a yellow clown goby, and maybe 2-3 chromis. (these fish will not be added all at one time)

This is going to be a reef tank with hopefully a nice amount of coral.

Overstocked? or no? should i forget the chromis?