I added all but the main leaf and the over loads and I do NOT recommend doing that. since I was having my parts rig towed, I left the main leafs on the donor vehicle (mistake 1). If you are going to do this, take the main leaf and cut the eyes off. If you don't and do what I did, the other added leaves will create a pressure point on the main leaf and it will slowly eat away at the main leaf. That's why I have OME's now
If I were to do it again, I would remove the over loads, add the cut main leaf and see how I like it. I did that with my Jeep back in the day and it worked well. not sure how much lift you will get from just the main leafs. On my "wrong" setup, I ended up with 1.5-2in lift.