You are going way too far with this Idea, If you are going to do all of this, Go get a gen3 Wagon, once its all said and done you are going to have so many alterd parts you'll be confused what you need, This car you are trying to do it all to is not worth it, Trust me I've wheeled Gen 2's and all the problems you have had will still be a problem in the future, As for flexing and all that, you have to weld your rearend, then you will be able to go everywhere you want, This again is a thread going south. as long as you have the 2" lift on it it will be like this, if you get too much flex in the rear you will always break axles, Which I have said before,
If you get too much travel in the rear you will pull your axles apart or shatter the bells like gen 2's like to do, For what your car is, deal with what you got untill you build a 4" or 6" lifted wagon, then all of your car will be at the same level, and no 2" over stock....................
Jeff
Jeff