SLam HS's

Hi, I have been on here before and asked a question about using 72-slams all around the dakota. I am putting a 500 HP, 800 pds engine in the dakota (club cab 9. I was gonna use slam-72's all around. I can get a real good deal on 2 of my buddies used HS-62's though, and was wondering if I should go 62's in the front then 72's in the back? I wanna be able to get alot of lift though so I can stick some 22's on and lay frame. And I am also wondering if the little bit of a bigger bag would help for hookup and stability when stepping on it. The question I am wondering should I take the deal and go 62's in the front and 72's in the back or 72's all around? Thanks alot for any advice!