I would move your battery inside and add another. double your AH availble. even next year when your not doing bottles that would still let you go longer between generator use, and even though your not going to be warming bottles you'll probably be still running the furnace more than you did.
if it was me I would get up to about 650 watts of solar also, if you have the room to do it. this might eliminate your need to even use the gen. but you would still have it if there was a week of overcast or somthing like that.
Steve
