Run a 295/70R18. This tire is about 34.25" tall and about 11.6" wide. These would mount up on your stock wheels and with the 3" body lift and 2" level they will fit like a glove.
If you need more help than that give us a call. Anyone here would be happy to help you. We can quickly run through some options and we can save a quote in our system if you aren't quite ready to buy.
If you need a calculator to help you determine how large or wide a metric tire size if. Use this: Tire Size Calculator - Discount Tire Direct
Type in your current tire and the tire you want to run and it will calculate the size differences for you.
Here's a link to the tires available in the 295/70r18 size: Tire Products - Discount Tire Direct