Shouldn't be an issue.
In my 85 I have had 2 cleaners, 2 peppermint, and a mated pair of Coral banded shrimp...plus a few sexy shrimp.
The big thing to watch for is compatability... i.e. you cant have 2 CB's unless they are mated... don't buy harliquin shrimp if you have starfish you want to keep. etc etc.