Could one have a Redear Sunfish/Yellow Perch pond with just a few Smallmouth Bass?
I won't speak for the experts here, but if I could chime in I believe having just a few of the bigger teeth (SMB), you'll end up with too many stunted RES and YP.
EDIT: And FRIZ, don't worry about asking "silly" or "too many" questions. I'm about as new as you are to this and those questions simply don't exist in this forum.