Yes you can. There is no need to go 4" of lift just to do 35's. Heck, I am running 40's on a 3.5" lift! You can do 35's on a 2.5" all day long...
I would recommend the Rock Krawler 2.5" Flex System. It will give you all the height you need, progressive rate coils in the front (so you wont sag like with the ProComp's), and also has adjustable front track bar and front lower control arms. That way, your JK will drive and handle as good or better than it does now!
How does that sound? Let us know if we can help. We can put together a package deal for you that will have everything you need, including the wheels and tires! Feel free to PM, email, or call us at anytime!