Both disks already have DOS on them, so just need to be loaded in your favorite emulator.

Integer Basic:

After booting, type
LOAD JOURNEY
and then after the game has finished loading, type
RUN

Applesoft Basic:

After booting, pick the BASIC option from the menu and hit ENTER. Then type
LOAD JOURNEY
followed by
RUN

The Applesoft version is slightly more advanced and is the recommend one.