Huge dilemma

Tonight is the first night with clear skies and good seeing we have had here
in back woods Carroll county Maryland in weeks. The sky is clear, the stars
bright, and only 40some degrees with a high dew point.

Problem is, I have a huge meeting in the morning. I know a 21 year old
should be able to withstand the lack of sleep, but I put in 6 extra hours
today.

Should I...
1.) go out for a good long session, and suffer through the meeting (could
change my career for the better)
2.) go out for a little, meaning only taking my 80mm ST refractor and get a
half way decent night sleep(5 hours or so)
3.) go to bed now and hope tomorrow night is just as good
4.) say f**k it and go out all night like I should and call in sick in the
morning (I mean I already have a good job, but a little more cash would help
now and then)

Know all of you have had this same dilemma in the past....