It's not terrible, but far from ideal. That gives us a decent bench but nobody who is really a game changer, except Eddie House when he's on a hot streak. I think I'd especially prefer to see someone with a bit more impact than Udoka, who is good defensively but anemic on offense. We could do worse, though.
Diop is good on defense and not very useful on offense, but I have no problem with that in a backup C.
So if this were our off season, I wouldn't feel terrible, but I wouldn't feel super confident either.