Another Tire Question...

[Dep. Ranger]

My Truck Specs are in my Sig. I am wondering if I use the 2'' Coils in the front to give me a total of 5'' in the front and 3'' in the back, do you think that I could push 33s with a stock gear of 3.73(I think that is right). If I can't push 33's with my stock gears, do you all think that it will be worth it to lift it higher even with 31s? What is the exact purpose of the camber kit? I know it is supposed to help out with the alignment of the truck, but is it required? I plan on getting my truck aligned and new tires if I do the coil lift. Even with me getting it aligned at a tire shop, will I still need the camber kit? Thanks ahead for all of the helpful advice!
I LOVE THE RANGER STATION!