I would go with where I am committed and imply to the paid people that you are too popular to be able to get you to book, especially for such a distance, without longer notice. I don't think the bit of money you might make is worth the time and distance and disrupting of your already made plans: it could make you look desperate to yourself? You do not want to be going to/picking just any gigs because they pay but ones that fit you and your lifestyle. Technically you could probably get a gig across the country but do you want to? Right now you want a certain radius, saturate them and then the radius gets bigger as you do, holistically?