Congrats on your Triton Lite. If you want to increase height, you need to increase the spring rate and damper rates. In this case, you might as well visit a 4x4 auto shop to get a second opinion. Its not the same as modding cars. And since your Triton lite comes with smaller and skinnier wheels, there is a difference in handling once you increase the height. The regular Triton has larger and wider wheels to keep the car stable with the increase of height. You heva a few options to keep the cost low. A visit to some tire shops to trade in your old wheels and tires to a new larger set like the regular Triton.

If you just increase ride height, its not really a good idea given that u are using the truck to carry goods with those skinny wheels. Think safety first. Get a second opinion in those 4x4 shops.