Yeah, if you're going to miss a chance to take a franchise QB, you might as well take a franchise LT- it's the next best thing. I was a little surprised at how ineffective Long seemed on Sunday, but to be fair I doubt he was expecting to go against Wilfork all day, so he probably wasn't very well prepared.
What it really comes down to, though, is that next time that scenario presents itself- Franchise LT available, no clear #1 pick, a QB who may or may not be legit (even by 1st round QB standards) I'll never have a problem with taking the LT. It's a justifiable pick, low risk/reward in comparison to the QB.