Once you go over 2.5"-3" in front, you'll need:
An adjustable track bar (preferably with a double shear bracket) $250-$300
Adjustable control arms - at 4" you can get away with just lowers. At 5-6" you'll need both upper and lower $300+
Extended sway bar links - either fixed ($75) or discos $150
At 5+ SOA anything under 32's will look silly. So tires $600-$800
The reason for swapping axles is usually to re-gear since 33" tires with a D35 and 3.55 gears is sketchy, Regearing your present set-up is usually more work and/or more money than just swapping in axles with the proper gearing. You might be able to find built axles but they're not cheap
So, to do a proper SOA with proper tires, proper gears is possibly from 2K to 4K. If you just weld on some perches and jack it up over the axle without addressing the front axles and it's geometry, you'll be sorely disappointed. Just sayin"
I have a Cherokee lifted 6.5 inches on brand new 35s I basically from what I understand have everything I need for up front I just need to figure out how to lift the rear because from what I read
The rear xj springs are not as long as the mj , so I won't need to spend anywhere near 2 to 4K