While Alaska and Africa might seem to have a lot in common (besides both starting and ending in A), like wilderness, "bush", remoteness, etc. The difference in culture is drastic.
You aren't planning on moving for a year, take a couple weeks and have a holiday (without going on safari), but just stay in a hostel for a couple weeks. Get to know a bit about the place, you might find that you're right for Alaska, but not right for Africa, or you may find that Africa is your heaven on earth.