3x100cart

looking to do a few things to my truck first is it needs new suspension all around and steering linkage I want to add some lift be able to tackle any thing wi. has to offer and 4x4 trips be able to go into air for big bumps(nothing insane) but I need to not loose it as my DD or drop my fuel by half
I was thinking a 3 inch lift and good suspension kit and maybe some frame strengthening( the bed is off) but i am a newbi so I dont know what kits are good and how to bulk up this frame
Also my wifes budget for this was spent half way through the motor rebuild so I dont want to piss her off to much



next is I want to replace my rusted out doors I found some nice ones for a 4runner that are power any experience with how that is done would help