Maybe here and there, but not as your base defense.
You don't have a NT. This is pretty much the keystone of 3-4. If you don't have that NT eating up at least 2 blockers, you're going to have Olinemen on your 'backers, eliminating advantages of the 3-4. Carriker and Okoye would both be DEs in the 3-4. Branch has the size to play NT, but he's a bit of a risk. That's assuming any one of them is there at #13.
Glover would more than likely be a DE, but the other DE spot would be a question mark.
Leonard Little is too small to be a DE and would more than likely be an OLB. Hall might be able to play the other DE, he's a bit on the smallish side.
If you thought your defense was bad against the run last year, it would be even worse if your coaching staff up and switched. You don't have the personnel for it , and it might take 1 or 2 years to make the shift.