Great points.  Again, I wasn't seeing him bull-rushed and beaten.  If anything, it was speed of the defender that seemed the most challenging for him (which he does pretty well with, especially given it's his first year).  I wouldn't change what's not broken.  The guys inside are the ones who need to deal with the bigger push and need to be big to do so.  Tackles...not so much.  Worst case is they have to push a heavier DE, who's still 280 and below.