Fellas, March bidding question:

I have vacation in March. Should I bid reserve?

4 days of vacation = 13.0 hours of credit in March
80 hr ALV for March = 67 hours left for a potential reserve line, no?

How many days would I be on reserve?
Would my guarantee still be 80 if I didn't fly above 67 hours? (e.g. I could fly 30 hours and get paid for 80 or fly 72 hours and get paid for 85)

Thanks