Moog offset uca bushings

I should use the k7103 offset bushings, here is my question for a car that is gonna be used as a weekend warrior less than 5000 miles or so a year is it really necessary? I understand the alignment issue with the camber but is positive camber really all that important for a weekend warrior?

Yes, I would consider it necessary. And the problem isn't typically camber, its positive caster your looking for. Helps the car track straight down the road, and it helps the steering wheel return to center after a turn. And you shouldn't have to rebuy anything else.