You don't have the stock Rubi tires on there? If you do, they are 32's (265/75R16).
For mud, hills and street, there is not much point in a 6" lift.
Also, for $1500 you are going to be hard pressed to even get a crappy LA setup.
Here is what I would do with the $1500.
Armor up (rocker protection, diff protection, Gas Tank Skid, steering box skid).
New tires (33")
1" BL and 1" Motor Mount
If you have any money left over, buy gas.