Just don't make him a grappler, or you'll get a lot of, "Get your hands off me, you damn dirty ape!" jokes. :P
As for the language, it would depend on how he came to be sapient... was he Awakened as by the spell by a random druid? In that case, he would be given one language of the druid's choice that it knew (so one language of your choice), plus one per Intelligence modifier (though if he was Awakened, he would have higher than a 3 Int, unless the druid rolled terribly). If he just slowly somehow gained that extra point of Int, he might have basic, very rudimentary language skills of whatever is spoken most around the area he gained sapience (or who trained him, if he was taught sapience over time), but would have major difficulty giving any but the most basic concepts, since 3 Int is literally just above animal intelligence and the bare minimum for sapience.
As for alignment, that would also depend on how he achieved sapience... one Awakened or coming into sapience slowly on it's own would, if it was done recently, still likely maintain a pure Neutral alignment like it had as an animal, though time away from it's life and among other sapient species could easily sway that one way or another (depending on how it was treated). One trained by someone into sapience would likely have whatever alignment it's trainer had/instilled in it... likely some variety of good, though if he was trained for nefarious purposes I could see him going evil as well.