Don't confuse turnround charter flights to egypt as longhaul. It's a long day sure but longhaul it ain't. 6-8 hours with 24-48 hrs off downroute before same back, followed by a couple of days off. Or 14 hr flights with 6 hours in a bunk, eating, watching a movie.However, as someone's already stated, from what you say,Easy jet seem the better option but be careful. We can be a fickle bunch us pilots and for every one of us that leaves to daytime shorthaul, an equal number will give their right arm for hours in the cruise reading the paper. Instead of 4 short and busy sectors around Europe in Winter. Day after day after day.....
Good luck in your decision
p.s. Roster instability. Monarch, by any chance......?