i have an all-electric house myself (heatpump), and it is pretty rough in the winter, especially if the power goes out. my solution? if you want heat, burn something. electric heating stinks. you can build a small woodstove or a grain burner that will cost less to build and run, and will give better heat. you can even build it outside and use an auger to feed it, and use radiant hot water baseboards, and tie that into the hot water system.

best house i ever lived in for that had a huge oil fired boiler that was hot water and radiant baseboard, from one system. never ran out of shower water :)