Agree with Jim.... you only want to do this once, and after all that prep work it would be awful for it to turn to some kind of mess due to impatience.
If the boat's ready to paint that's the majority of the work anyhow, the actual painting won't take long. Most likely you can find other chores/project areas to nibble at thru the winter cold.
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
1984 Fast/Nicholson 345 "FastForward"