have you started or completed ground ? if you have then stay there, if you haven't started ground or at least made it to the sim, then you owe them nothing, id say that if i was part of the recruiting team of a major and im looking at an applicant that left for greener pastures after only being on the job for a month, id have a bunch of fun questions in that interview, so you better have a good reason, and i don't know if the ones you have listed would cut it with me, remember your judged by all your decision even five years down the road