@Slartibartfarst42:
Owning three guitars is nothing over the top (and I've had a single one for 20 years). Yeah sure, you can't play three guitars at once, and chances are you'll have a favorite one you end playing most of the time, but that doesn't mean you _should_ get rid of the others. I can only second darkbluemurder: take some times to experiment with all three guitars, eventually try swapping pups, well, let things settle a bit before you decide. If you really don't have a use AND can't see one for the Jackson, the by all mean sell it and use the money for something that suits you better, but wait until you're pretty confident you won't regret it.
My 2 cents...