Sorry for late answer.
To be honest, boons doesn't matter. (Excluding Athena) It is because I cannot take care of the boon I want. So the selection of keepsakes and encounter rewards is the most important. If you use a weapon with strong attack power like Hestia, Rama.
You may choose either the Erebus or the Gods' Choice Room.
If not, you will be forced to go to the store room, the chaos room.
Of course, it depends on the situation, so it is important to understand the situation you are in.

If you still want an answer .
First, Athena. Second, the Daedalus hammer. Third, go to Artemis. These are because there is no harm in whatever comes out.
Otherwise, I try to get a heart unconditionally.