They are sold out of the 600lb rear coils and the front prebuilts. What weight did you choose for the front-stock, 0-110, or 110 to 220?
I'm thinking 220, a winch feels like 100 alone
The only difference I can see between the stage 1 and 2 is the control arm. Which I think an adjustable SPC is the way to go.
If you are going to run bumpers you will need the Performance 0-110's at a minimum and with a winch up front or a spare and fuel/water cans, maxtrax, etc. out back you'll want the 110-220's. My 9500lb winch with synthetic line weighs 67lbs and the bumper is 134lbs but I removed roughly 60lbs from the factory frontend. That said, I still went to the 110-220 springs up front when I already had the 0-110's installed, but they just weren't enough. There's definitely a difference in the ride quality with the 110-220's when compared to the 0-110's, it's not horrible but it's isn't as nice either and that's one of the best attributes of the FCP's, they ride very nicely. I have some front 110's lying around you can have for cheap should you go that route.
Get an adjustable UCA for sure, Total Chaos, Icon, SPC, JBA, pick your poison.