Need help deciding my final suspension lift options

I made a post awhile ago when i said i would start modifying my tacoma and got some helpful feedback. I want this thread to be about the suspension lift only so i can get some assistance as to what you guys have installed and how you like it etc.

I was looking at a 4" RCD suspension lift : http://bds-suspension.com/kit-customizer?kid=816H

What's the difference in the fox and 5500 series? This might be a dumb questions but i don't know anything about suspension.
Also i notice the 6" lift is only like $100 more expensive, what are the pros and cons of the 4 or 6" lift? I would like 35's on my truck but want to be able to have at least 33's without any sort of rubbing or cutting the body

I noticed it also says can no longer use a 17" rim so i'd have to have new tires and rims before i even think about getting it installed?

Thanks guys