you also can measure your you bolts and take that to a spring shop and tell them what you need (or take the old ones in if you can)
dont need rear u bolts.
the front u bolts should come with the kit.
you can buy skyjackers extended brake lines or someone sells a relocation bracket.
imo i wouldnt do a shackle flip. you move the axle forward and its no longer in the center of the wheel well, it doesnt look good imo. you can also do blacks in the rear, and you dont need anything for the rear except for what your shackles or blocks and brake lines.