Im kind of in the same boat, but i fly more like 10 hours a week. Not in a jet but im next in line to move into a kingair. Im 24, near 1,000 hours and have/had aspirations for large heavy jets. However there is something i still love about small airplanes and being home every night. I think id like to fly in the airlines, however with the good amount of flying im doing in good equipment and how good the company and people are in the company i work for now, i feel like i would regret it immediately. Its certainly a hard call, especially if its a paycut and more work. But then again, if its your dream i can certainly understand the desire to go do it. What do you like more? Flying alot with the airlines? Or enjoying your flying that you do get, but also having some more free time? Ride the hiring boom wave is a good idea, might even help people get faster upgrades in the airlines. But the boom is not just airlines...corporate aviation is also booming.
Anyway, have you considered taking a leave of absence? If you really want airline time, talk to your boss and see if he would hire you back in a year or two (whenever the training contract is up, or later...) heck, you'd get alot of good experience you could bring back. that way it wont be such a bummer if you don't like the airlines. If so, get in writing! Sign something. That way its not just on the word of someone. Not that trust is an issue, but its just a smart idea. From what iv read, your boss/owner is a nice guy. Im know mine would be open for discussion if i was at fork in the road with my career path, but would prefer me to stay. I consider him a friend for sure. But be careful with that, you never know when people get spooked and start searching for a new crew. Just my 2cents.