I would guess 3, but off of 5 in 2 years, I think they will shoot high on the third spot. And I agree 2-3 ends...Def 3 if Cam Williams or Phillips aren't coming.
Overall I'd say
QB 1-2
RB 1-2
WR 3-4
TE 1-2
OL 4-5
DT 2-3
DT 2-3
LB 3
DB 5-6(including Tennison here even though he's a striker)