bumpstops
If the shocks are made for the 3" lift they'll get damaged at full up travel by bottoming out, you may also have some fender rubbing issues. I would definitely extend the bump stops sooner than later.
From your profile pic, you are running without fenders? Yes, less bumpstop will increase the up-travel, until the point where the shocks over-compress and you destroy them. Run the numbers and see what you come up with, but you are probably better off leaving them as is.



