Whatever you do DO NOT GO TO JET UNIVERSITY !!!!!
I think the idea of a CRJ course is good, but not for that money nor in that place. I don't like gulfstream neither. Also, I would recomend building time/CFIing and on top of that I strongly recomend a jet transition course. That doesn't mean you should "buy a job" is just more learning. Also, if you decide to build time don't go to a place where you build multi with another guy and an instructor in the back "supervised solo". Believe me, is not the same.....there's no such a thing as a supervised solo, you'll never really learn if you are not by your own. Someone will be baby siting you all the time. There are plenty of oportunities right now, so don't waste many doing things that won't help on the long run. Also flying turboprops is a lot of fun, I do not fly props, but I have a in the past in the right seat and, specially if you don't have an autopilot, solid IFR becomes really challenging and makes you sharp pilot. Having said that, I also recommend that you don't choose your first job based on the airplane. Find a company that suits you, and whatever is the equipment just take it. An airplane is an airplane.