For sure go with the SYE. I tried to avoid it, and wound up getting one. Adams driveshaft has a kit with the SYE and CV shaft for like $410.00, Was not too bad to install. Also, Look around, you will find complete lift kits with everything you see up there listed with the exception of the wheels, tires and sye. I am running 35's on my stock axles, but run .456 gears, still have good power. But I don't do any major off roading stuff, mostly road miles. If you are going to do a bunch of off roading or install a locker, I would say you will need to upgrade your axles to say the least. So some of it depends on what you are planning to do with your unit. Remember, if you go with a body lift, don't go with anything more than a 1.25 inch. They are a cheep way to get some clearance, but any more than that and you will have shifter problems and they look like crap. Good luck, do your research in here and you will be fine. Remember two things.
1. Cool ain't cheep!
2. Custom applications make for custom problems, so be patient. lol