I would run 4.88s if you plan on running 33s. I personally run metal cloak control arms and I love them! I have an 8.8 in the rear and i love it, but since you're only running 33s you don't have to worry about axles too much. If you're dead set on putting something stronger in I would go with a 44 if you can find one. The 8.8 is awesome, but you do lose ground clearance with it, so you might hit it a lot only running 33s. As far as the front you could stay stock and shaft it or find an hp30 or a rubi 44 and do a direct swap and shaft it. As far as lockers I run a spool in the rear, but if I were to change it I would use a full case Detroit. For the front the only way to go is a selectable, I'm personally a fan of the eaton electronic, others like ARB, but I don't like air lines and they tend to blow seals. You could also stay the same lift height and adjust your shock height and bump stops accordingly to get maximum travel.