Want a complete kit? Take a look at trailmaster's 4.5" kit with shocks and driveshafts. Contact Yates Hudson on the forum here and he can get you all the info you need. It is a complete kit that will get you plenty oflift for 37s. I know because I'm running the kit with 37s.
I love it, it rides great, handles great, flexes and performs well. The kit comes with basic SSV shocks wghich are...alright. They do the job but in the spring I'm going to upgrade to something much better like Bilstein, Fox or Elka.

The kit has everything you need to lift your JK a full 4.5", safely and functionally. I did beef my front axle when I did my ring and pinion swaps to ahndles the 37s. I don't wheel hard but feel that you can't go wrong with overkill. The install was simple, everything lined up and installed as expected. Kit has all 8 control arms, quick disconnects for the front, adjustable front tracbar, rear tracbar bracket, bumpstops ext. stainless brakelines, springs, shocks, steering stabilier relocation bracket, and driveshafts. I might of left a piece or two out. The nicest thing about was that the measurements given to set your arms center the rear axle in the wheel well, so no trimming of your pinch seam to run 37s.

Here are a few pics of mine.

 

Here is a few of mine before and after.

 

That sounds perfect. How does it ride? Did you install it yourself? Is it full bolt on or does it require welding?

 

Kit is fully bolt on. Need a grinder or cutting wheel to cut the upper passenger side front control arm bolt because of the exhaust being so close to it but that is expected and they include a new bolt for it. I installed it at a friend's shop on his lift. Took about 5-6 hours, taking our time. When it was done, bled the brakes good, centered the steering wheel and was good to go.
It rides just as good as stock if not even better. The shocks that come with it are the typical entry level shocks that all manufacturers use. They work well, are adequate for most driving conditions, but obviously you can't compare a $50 shock to a $100 shock without there being differences. So like I said I will upgrade down the road.

 

I had their kit as well on my first Jeep. Was a great kit and the fact that it came with new driveshafts was a plus for me. Yates is a topnotch guy and will quickly answer any questions you have to make sure you are satisfied. There are three of us in my area running this lift.

 

Clayton makes a great kit

 

I see you've done the gussets. What kind of wheeling do you do. I'm thinking of doing this same setup as well but was worried about the axles. I mostly ride on road and on the beach. I like to play in the mud but there isn't too many off road parks by me so I don't go too often.

 

Rockrawler! Strong as hell.