The job is easier if you remove the caliper. Place the speedo hookup in a plastic bag when the wheel is off. Chances are you will not need to hold the spindle. Just get the right size hex driver for right side.
Re balancing. Sure if you have weights on the rim you can leave them on, but do you really think the tire shop is going to balance your mounted tire taking into account the weights you left on that may be wrong? I take em all off. Let them balance from a virgin state.
