I would say that there is nothing wrong with ambition and it really is a personal choice. If that is what you want to do then get out and do it. As for training then bailing, it will be frowned upon to a certain extent but it is almost expected at some of the lower tier regionals. Try to go somewhere that you can take if you get stuck though, things happen and you can't move on as quickly as you hoped. September 11, 2001 was one of those things, and it set my own career back a few years. Luckily I was somewhere that I enjoyed and it was just one of those things that happens.

I also agree with the sentiment that you should really enjoy what you are doing now. So many of my fondest memories are of flight instructing. I was talking about this subject with a guy a few days ago. I feel sorry for the guys that will get this new multi crew license. They'll miss all the real fun in this business. It will become a job, still a fun job, but a job just the same. Decide what is really important to you. Only you can answer that question. Some of those fun times can be had by doing what you outlined. Not many guys get to fly a 1900 anymore or any turbo prop for that matter.

Good luck with your choice and Congrats. on the upcoming graduation.