Having been furloughed three times in a nine year career, and seeing how bad aviation is here in the USA, I would recommend staying away from an aviation related masters. By all means, get a masters, but get an MBA or something else not aviation related.
The reason is twofold, first airlines in the USA don't care what you degree is in, and they don't care about anything above a bachelors degree. Having a masters will not increase your pay as a pilot either. But having a masters in something else will help you tremendously when your first furlough comes. It will help you after ten years of living on poverty level wages and you decide that aviation in the USA stinks and want to do something else. It will even help you more if you decide to move into the management side of an airline at some point.
And ERAU is grossly expensive, there are far less expensive options in the USA as well.
Best of luck to you.