first question i have is for what????
how big of a tank?
if you have a desent sized tank, i'd say no, because you only have 2 fishes, the inverts, don't add enough to your bioload to mention
HTH
no, it is not too much, if all is going ok, you could probably add afew more fish yet, but the best test now, is how well you are able to maintian your water, the rule of thumbs are just that, general rules