Hello!
As in 1/1, you can take many ways to lift your jeep. The easy way to my opinion, you can do a spring over conversion by put the axles under the springs.
Other solution I take in a unfinished model I have is to build your own springs and mounting hardware, but it requires a lot of patient and time.
The other way is to buy a photo etched spring system, again you need to do a lot of work, but the finished product will be more accurate.
Any way you take, I think you need to do a lot of research in the 4X4 y off road magazines so you can take your own decision.
Enjoy your build.