I would definately go for the FE position. Granted I am not a working airline pilot, but I have been lurking around these forums for a long time (reading but not posting), and my opinion is that getting valuable jet time, better QOL than regionals, probably better pay, and you'll probably pick up a lot from the CA/FO when flying with them. Overall, it will make you a better pilot, especially if you continue on the DC-10. You'll understand aircraft systems better...etc.