ok i just got paid and am going to go to 4 wheel parts tomarrow and purchase all my stuff. is a 4 inch shackle flip in the rear w/ 4 inch springs the best way to go for a 8 inch lift??? and 8 inch springs in the front???? or should i just go with 8 inch springs all the way around??? are there if any pro's with goin with 8 inch springs all the way around???