Skywest or Endeavor are not bad options. Myself and a lot of coworkers at Skywest are moving quickly over to Delta. I got my interview right before my 3 year mark. Granted all of us took first upgrade too. Something someone didn't suggest and I'm not sure if it played a role or not, look for job on the ramp/Gate with Delta at the Kalamazoo airport. Possibly through DGS. I did that in college for a few years and that experience as a gate agent and ramp agent was very invaluable when I got in the cockpit. It also helped give me a few more points and was a big talking point in my interview, and helped me graduate college a early as it was "internship" hours.

Good luck on the path. I have about 5 personal friends (2 from WMU) right now all of us waiting to go to class at age 25 right now. Times are great right now.