The issue with waiting is letting everyone know in a timely manner, looking at the weather for tomorrow they are calling for strong thunderstorms and looks like 20mph wind. I think being proactive and postponing for one week is the smart decision. I would rather play it safe, yes there is always a chance that the weather men get it wrong and it clears off tomorrow. this is copied from the National Weather service for Friday night "Thunderstorms likely in the evening. Then the chance of scattered thunderstorms later on. Low 71F. Winds SW at 10 to 20 mph. Chance of rain 80%."