Our 61 Bambi Project: 1st, remove the pan

[downtime]

After about 2 years of ownership we're going to rebuild the Bambi. She needs a floor, the original water heater looks scary and will go.. we will also try to outfit her with some modern conveniences if that doesn’t compromise her old bones. Right now our biggest problem is the removal of the belly pan. With all the rivets and screws out.. (We think..) she's holding tight. Any suggestions?.
As this may be a 6 month project and this is only the first of many issues, how should I 'thread' this? I've been away from the site for about a year and it seemed to get harder to navigate. Or am I just getting too old for change? I read somewhere that a Bambi is built for 6 at Happy Hour, 4 for Dinner and 2 for Bed. We will stick with this plan during our restoration.

Mark