Jeep build finishing touch advice needed.

[sinat01]

So 1999 2dr XJ
4.5" lift om 35s
3 link front
Boostwerks shock towers rear w/leafs.

I am wanting to go to a rear 4 link from IRO to match my front 3 link. I also want to swap to coil overs for the rear.
What is the best way to figure out spring rates to match the amount of lift I currently have? I was also looking at a triple rate setup for a more supple suspension.
What brands are decent without breaking the bank?
The jeep generally doesn't have a ton of tools in it, but I do plan on adding a tire carrier bumper at some point in the future.
Now, with this being said, this XJ is also my daily.
I also planned on adding an aftermarket sway bar to help with body roll as well.
Would limiting straps be a terrible idea for the rear as well?
Also looking at new extended brake lines due to my crown extended lines being about 9 years old.

 

[75SV1]

Wanger or Raybestos has 3.5 to 4.5 extended brake lines in their E3 Brake lines. Suppose to be a higher grade. I do use them on my 2" lift. I did have some of the wrapped stainless lines on a 4.5 lift. The sheathing cracked quite a bit.

 

[sinat01]

Ill have to check into it. The ones I have now are the crown 7 layer or something like that. But when I installed them I was at 3.5" lift and short arm lol not 4.5" and 3 linked. Brake lines tend to make good limit straps once or twice.

 

[75SV1]

I am having/building an XJ with Ironmans front and rear 4 links. I was going to go with Rockcrawler front springs. A deal on some Metal Cloak front springs changed that. I am using stock front WJ springs for a 4.5 lift. I am also doing the Boostwerk rear shock towers. I have 32 to 33's on it now. I want to go to 35's latter. Its also getting an LS swap. At some point I was going OME rear springs for a dual spring in the rear.