I am in the same boat. Its at a major that I wouldn't mind making a career at. I kept telling myself i wouldn't leave my Regional job before i hit the 1000PIC but that was before i received any calls. Now i am torn because i have an opportunity baring i pass the interview to get on somewhere I could potentially make a career at. I cant believe i have to even make this decision actually but I am going to give it a shot and if it doesnt happen, what did i lose? Then i am back where i was before the call which is a good spot also. Both of us have a big opportunity as well as a big decision.
I probably should have waited till i was 100% ready to move on but i honestly didnt think i would get called. Plus when are you ever going to be 100% ready in this industry to do anything. I guess i will try and get through the interview and get an offer before i get to bent out of shape. LOL