Having been through lots of these, just get out of town if told to leave.
Plan on (as said above) about 2-3 days away (take a cooler with some food and stuff) and chill out in car -- a plane ticket is the LAST thing you want right now as with any ticket -- they are EXPENSIVE when you buy last minute.
Within about 24 hours of landfall you should be able to begin making plans to come back. Seriously, take the warning to leave if told to do so (I have several friends in New Orleans and their eye witness testimony is no joke) -- Now, having ridden out Ivan in Mobile this year, I would say just be safe man. Your conscience is your best gage here, but if you see the gov and mayor leaving town ... I would take that as a pretty good indication of what you should be doing.
However, take Robb up on the offer, eh? I mean, at least there will be laughter as you drown to death! (Just kidding Robb ...)
~TJ