Well, here goes...
I'll start by saying that all 3 schools will leave you well prepared for where you want to go in the industry. I graduated from UND in 2000 and got hired at Horizon 3 months later. After about 6 years at Horizon, I was lucky enough to get picked up by Continental, so I may be somewhat biased in my opinion. I think UND has an excellent program, and I highly recommend it. Getting an education and flight training at any one of these schools is not cheap, but I think UND will come in close to being the least expensive. (If you can call $80,000 inexpensive) I think you're on the right track by pusuing a 4 year degree, it doesn't matter if you have a degree in basket weaving, it just proves you have an education on how to think for yourself and I feel it is a must to have a 4 year degree in anything. I have worked with students from both Embry-Riddle schools and from FIT as well, and I cannot say anything negative about either school. I'm pretty sure that Riddle will cost more but I do not know about FIT. It might just come down to where you want to go to school for 4 years. The weather in North Dakota is not as bad as you or many people may think. It has it's moments, but there are plenty of great flying days year round. I could go on for a while about the pros and cons of UND and other schools, but this is my 2 cents. Feel free to PM me if you have any more questions, I'm more than happy to help. Good luck in your search!