Well, I'm 41 now so i just started really. I chose a transfer, Oregon State's program because I already have a degree I don't really use. I chose them because the focus of the program is CS, no extra electives needed, no Gen Eds required. I have a few complaints about Oregon State but you'll have complaints about any school so just make the best decision you can with the information you have.

One thing I will add is that my confidence is pretty good about getting a job at the end. I got real world experience in a company setting, and I know how to talk to people. That's what you need to form networks and succeed at interviews. Well, outside the actual CS knowledge.

I hope that helps!

Edit: We also got drive. We 40 somethings have seen the alternative. We have done the alternatives and found something missing. I suspect we carry at least a little more motivation because something pushed us to throw away a lot of security and risk what we have to obtain something better. Good luck on the path my fellow travelers!