after that I'm going to be walking daily for at least a mile, and working my way up to 5 or so

The procedure described in "Body by Science" by McGuff and Little can get you stronger than that with less time investment. I've been doing it since September 2010 and still prefer it over any exercise regimens I've done before.

I'm primarily interested in it for injury prevention. Jogging and weight lifting with higher weights caused too many injuries. Walking 5 miles would have taken too long.