We head south in October about a week after our Thanksgiving. We usually make it a four week trip down and back and we use it as our opportunity to travel around. We leave the trailer in Crystal River, Florida and just drive the truck back to Ontario for Christmas/ New Year's then head back down in the first week of January, we stay until the end of March then bring the trailer back home. I drain the water but have never bothered with anti freeze while it is stored in Crystal River. It's about $1 a day to store it.
BTW - Do you have reservations for February? Yes, you can just chance it and park hop but on weekends you may find no room at the inn.