Keep a few things in mind...
First, the NFL's current shortest starting QB is also arguably the NFL's best: Drew Brees
Second, Wilson played behind an NFL-sized oline last season. Yet, he threw 33 touchdowns against just 4 interceptions, and he had a better than 72 percent completion rate. He knows how to find the lanes.
My concern is whether his body can take the beating an NFL QB has to endure. But smarts can definitely extend a QB's lifespan.