Widening the front track relative to the rear will decrease front load transfer. The opposite is also true.
No problem. I don't think may xi owners actively track their cars. Most are looking for exactly what you want. For your situation, bilsteins and eibachs will probably be fine. V1's are decent if you want to have height adjustability, but the spring rates are pretty out of whack.
Also, the bushings the cars are equipped with are largely to blame for the "wobbly" or disconnected feeling.