Let's go with Str 15 for the chimp and 21 for the gorilla, just to line up with the ogre. I mean, an ogre should really be an evolved gorilla, right?
I'm okay with the racial swim penalty.
Multiattack or Alertness for the feat. Ranks should go into Listen, Spot, Survival.
Hmm, that's fine, though I might go with Multiattack given the reputation chimps have for meanness. Still, Alertness works pretty well, and customization is always an option.
I'd agree with Cleon. Although both are better matches than the Weapon Finesse feat the Menace Manual gives.
d20 Modern refuses feats to creatures of the animal type. Everything else gets feats normally, though...hm.Wait, does d20 Modern use 3.0 or 3.5 feat rules for monsters? I was looking at MM2 recently, and that reminds me that not all monsters get feats (or normal skills) in 3.0.
d20 Modern refuses feats to creatures of the animal type. Everything else gets feats normally, though...hm.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.