| | going and coming back to a place - i'll be back from place?
What would be the correct expression for -
Going to a place and return from there after some time. Say, I'm at school, and i'm leaving for home to return back to school after an hour (from home).
1. I'm going (to) home and I'll be back in an hour.
2. I'm leaving for home and return in an hour.
3. I'll go home and I'll return in an hour.
and rather, in day-to-day conversation, how do native express the above situation? do they use shortened sentences like:
goin home, back in hour.. (spoken)
Thanks in advance.