Storing a 2008 for 6 months in garage over Canadian winter...what to do?

I have a 2008 Fit with about 12,000 km on it, and I am storing it in
my heated garage for 6 months over a cold, Canadian winter, I have
been reading some posts on this group about what to do when storing
Hondas, but would like some updated hints. Some have suggested
disconnecting the negative wire from the battery, taking the wheels
off, using a gas stabilizer, leaving the windows open, leaving them
closed, etc. I purchased an 'intelligent' battery charger which only
delivers a 2A charge to the battery if it needs it....should I use it
to keep the battery up instead of disconnecting it?

Any tips would be really appreciated because I'm not much of a
mechanic and I do love this car.

Arthur