Ok, im sitting at 8 inches and here's what I think
Axles - Chrysler 8.25 is stong as far as the housing, but I would upgrade the shafts. As far as the Dana 30 up front, your kinda already pushing it with 35's, but IDK about 37's. Either way, I would definatly put a Truss on it. T&T Customs (Treks Offroad Equip.) has the best one I've seen.
Steering - I have stock now and......well don't get me started. It NEEDS replacing. Problem is that not many places offer stuff for that height. I'm gonna go with the JCR 1- Ton Over The Knuckle steering.
Arms - I have short arms now and they don't work very well at that height. Get long arms, you'll be very happy. T&T Customs has an upgrade for the front which is what im going with.
Front Springs - SkyJacker and Big OffRoad have 8" ones. RE has 7.5". Can't think of any more right now in that height range.
Rear Leafs - I have 2" blocks and I will never recommend them to anybody. They are making my leafs doing all sorts of funny things. Big OffRoad Has a set 6" and 8" leafs that come in Heavy Duty. Which will help eliminate axle wrap. I do recommend the Rough Country Adjustable shackles by the way.
Driveshafts - Your going to need a SYE
no matter what. I have a RE Hack-n-Tap with a RE driveshaft and it works fine, but if I go any higher I can see that it will bind at the CV joint. I also have a 1" T-Case drop. I tried to take it out one day, and well....that was a bad idea. Felt like the Jeep was going to blow up. I would upgrade it too. Tom Woods has some nice shafts....
Shocks - Just your own preference on this one. IMO I like the Bilstein 5150's....
Brake Lines - Your gonna need some looong one's. I stiil have the stockers and they scare me.....
Track Bar - Rusty's has one for an 8" lift but that's all I know of.
One more thing, STIFFEN UP EVERYTHING POSSIBLE. T&T has unibody "rail" stiffeners, Temper Mental Racing has pre-cut metal you can weld in behind the front spring/shock area, C-Rok has a steering box bracing plate, and RE and Rusty's has a steering brace that goes to the pitman arm.
Well that's all I can think of at the moment, but i'm sure i'll remember more later after I hit the post button.......