Monk 20. That's about all I can really come up with, nothing special that would need to be done to tweak the character to fit the concept.
Personally though, if the DM allowed the material from Quintessential Monk, I'd probably go Monk (Earth Dragon Wrestling school variant) 15, Enlightened Scholar 5. Though, that's mainly because I like grapplin' and the Enlightened Scholar PrC. Yeah, I'll never become an outsider until Epic levels, but hey, with max wis and a +6 wis item I can extend my natural lifespan by +450 years. Not too shabby for a "short sighted, short lived, expansionist, aggressive" human, eh?
^_^