Keep your UPS driving job!
You may have missed out on a major airline job. I would highly recommend to you "Do not give up your UPS Driver position to go and fly at a regional." You will be broke and your life style will change for the worse. Retire as a truckdriver and fly on the side in your C150 or even fly part time Charter or Corporate. Forget the Majors. What you have read about in the past regarding payscales and great life style is no longer. Its a changing industry that its simply a job not a career. May I simply say you make more money then FO's at my Major Airline job. Good luck in your search. your personnal happiness is what will get you through life. May that be flying or driving?