#1. Should not effect in any of those areas.
#2. It can be hard to tell but I would recommend asking a fellow jeeper with an experienced jeep and ask them. Or yake pictures of your springs, the front steering, and a side pic of your jeep.
4" Teraflex long arm lift. D30 tubed with chromoly axles, high pinion, powertrax no-slip and Warn Lockout Hubs. D35 w/ultimate 35 upgrade OX locker, 4.56 gears. NP231HD, Air on Board, Warn M8000 Winch.