[LWJ]

My $.02
This opinion was formed during a stronger economy but principles don't change.

1) They want you. Once they have made that mental committment, there is wiggle room.
2) There is always room on salary and vacation.
3) You can never re-negotiate after you accept. NOW is the time to give yourself the payraise/vacation you deserve.

Good luck! I will tell you that the above is absolutely from experience. I had a position in the past where I was able to negotiate significantly above the pay grade allowed for my position because I sold myself very well.

As you are a monster worker (12 hour days/weekends, etc) your future employer needs to understand that they will be getting a real bargain in you. Let them know what you need in order to perform at your best.

Larry