Land "land" will make the chopper land at the nearest (or most convenient) hpad, and it will turn off it's engine (eventually)
The land "get out" command will make the chopper land similarly, at the most convenient hpad, and will wait for all the guys who have been unassigned to get out before heading off again.
As far as I know, you can't assign a specific landing spot to a helicopter... you just have to muck around with hpad placement.
If you use that line you had above:
heli land "get out"; heli land "land"
your land "land" command would override the "get out" command. Use one or the other, but there is no point using both