Get current. Get flying something. Dont' apply to a regional and go fail a simulator check right out of the gate. Get flying, get current, then start applying. The talk about possibly going to a regional before you go to a major is idiotic . You're not going to a major. If you go with airlines, it's going to be a regional. AT 1,700 hours and no experience in years...your goal, if airlines at all, is to get current and get yourself up to speed, then go to a regional.
Remove the rust, first.