this is tricky since it depends on what kind of coaches you bring in and also who's is under contract for how long. 7 isn't a big enough number since we've got guys we just drafted who are under contracts for 4 to 5 more seasons who will mostly be around (especially the guys in the secondary).
Not counting the guys we drafted the last two years who I would automatically keep I'd try and hold together:
Stroud, Kyle Williams, Poz, Whitner, McGee, Schobel (still our only DE worth much of anything and makes the mediocre guys behind him better), and Lee Evans