See I don't think the strikes against him are legit at all. My oldest was a late talker, he didn't speak more than mumbo jumbo until he was 2 1/2, and when he was close to 3, he literally woke up one day and started speaking full clear sentences. He's 5 1/2 now and he speaks very clearly, reads, and is a great little conversationalist! :) He was very smart in other areas though, very physical, very coordinated, and he was just behind on tlaking, very ahead on everything else.
My youngest, also a boy, was speakign clear words by 8 months (cup, yes, no, nurse, potty, bites, sleep, play,etc) and by a year he was 2-3 word sentences. He's 2 1/2 now and talks.non.stop. I'm not joking.. he is never quiet. :) BUT he's not NEARLY as coordinated as his big brother. He's a 2nd child, and he's a boy, and he spoke VERY early, so that rules out your 'strikes' against your son. Please don't label him. Maybe its because I have two boys, but I HATE hearing parents say thier boys are slower because they are boys.. its not true, each child is different regardless of gender.
Wiht my oldest I WAS concerned, but with alot of reassurance from family, friends, and our doctor, we waited it out and sure enough he had a major language explosion around 35 months.