Wow, that is a great challenge!
I can see that it might be hard to do in winter. Are there other reasons why would you not want to continue?

I'm just starting to seriously bike for transportation. The biggest drawback to me is that I can't carry much on my bike. I added a rear basket and have bungie strapped a milk crate to my rack, but sometimes it's not quite enough. Then I end up heading back to the store in my car, which seems stupid. I have also found that I needed to tweak stuff on my bike - new handlebar grips, front and rear lights.

I checked out an electric power-assist trike with a big basket on the back, and I'm thinking that might be the way to go.