Scott, the very last (!) thing you want to do to your Wrangler is install a 3" body lift. No wheeler or Jeep builder with any experience or conscience will EVER recommend that anyone install a 3" body lift. A 1" body lift is fine and many of us including me run them. Some run 2" body lifts but those are rare and usually only in unusual circumstances. Only the clueless newbies run 3" body lifts. They are not only a PITA to install, they are even a bigger PITA to get everything working right with afterwards. Longer fuel lines, bending the transmission shifter, relocating the transfer case shifter, moving the console until you can shift gears, etc.
Bottom line? Don't install a 3" body lift. Besides, they are an instant clue to anyone seeing a Jeep with a 3" body lift that the owner is clueless and doesn't know what they are doing.
For 35" tires, all you need in addition to your 4" suspension lift is a 1" body lift. The vast majority of experienced Jeep builders and offroaders running 35" tires run that combination, a 4" suspension lift and a 1" body lift. Plus that helps keep your center-of-gravity low.
What rear axle do you have? Only go to 35" tires if your rear axle is the stronger optional Dana 44. The standard Dana 35c rear axle is not strong enough to run 35" tires offroad. Broken axle shafts are the usual result of running 35" tires on a Dana 35c and that can even happen with 33" tires. On the street it's ok but not offroad.
Once you let us know what rear axle you have and can thus determine what size tire you can safely go to, then we can talk about what is a good axle ratio to regear to.
Below are photos showing the standard Dana 35c and the much stronger Dana 44. Also, the Dana 35c has a black plastic snap-in lubricant fill hole plug, the Dana 44 has a steel plug in the lubricant fill hole. The first photo is a Dana 35, the bottom shows a Dana 44.
And welcome to WF Scott!