I currently have 2.5" lift springs. I am wanting to put maf's shackle reversal on, and they say it gives an added 1.5" of lift. That would be a total of 4" so should I put 4" springs in the back to make it level? I have a winch up front, and i carry a good amount of weight in the back(tools,recovery gear,welding supplies, etc. Not sure which way I should go. Any input is appreciated.