It's really your call on what you do with the bike .
My only suggestion, would be to prepare the bike for long term storage, drain the fuel tank and blow warm air through it from a shop vacuum or something similar, drain the carbs and blow dry with compressed air, drain the oil from the transmission, shaft housing, final drive .
Flush all of the old fluid out of the brake system, change fork oil .
Pretty much get the old fluids out of the bike, to reduce the possibility of water damage/corrosion .
Plug up all entrances for rodents and the like, mostly the airbox .