Great topic for discussion. For me, living in suburbia Dallas/Ft Worth, I tend to practice at the distances that I think I most likely will have to fight. Dark, no glasses and across the room/down the hall distances.
Of course, statistically we are all more susceptible to being attacked out and away from our home - so we have to keep that in mind.
I am of a belief that more important than distance is movement - mine and the target's -
-One who stands still gets shot (if Confucius didn't say it he should have LMAO).
Chris gave great advice - above, try to figure out what you will need and go from there
- Jealous of your outdoor space!