Fuel will probably not last over 6 months, unless it is sealed, unopened. The saito's are real picky about old fuel. Cycler would be a good acquisition in the offseason, as it will help you determine how well your batteries have survived the winter. I'd charge them at least once a month, as they will discharge by themselves sitting on the shelf. Motor should be fine, just put lots of afterrun oil in it (ATF) to protect the bearings. Keep the TX stored inside--it only makes sense. I keep all of my stuff outside, but it doesn't get as cold down here, and I fly as much as possible during the winter.