Don't just set your sight on a Major Airline flying job...Look at other avenues also...Corporate and Supplemental jobs are also out there. I worked Lineservice at an airport in South Florida, so it was a quicker way into a jet at the time. I got very lucky and didn't need to be a CFI to build my time. Your going to need flexability with your time if you want to keep your Firefighting job and fly too. If your setting your sight on a major job think of this...How many guys flying RJ's around that want those jobs too?...Bigger plan...Bigger suitcase...Good luck