Lift kits don't add weight capacity stiffer springs do that.lift but I would not do over a 3"-4" one. Doing that would let you haul more weight!
If you downsized only 1 inch on the wheels you only went 1/2 inch lower. The other 1/2 in is noticeable by the fender gapSold the non lifted cart 03 ds. Put a 4in. lift on my 6 in. lifted cart. It lowered the cart 1 in. I took the 23in. tires off and replaced with 22's. Got another in. lower. Not as low as i would like it, But it is better. Alot of money and work for not much gain. Love and learn.