Grit: I did not want to take for granted that RV parking would be available at a marina. Yours and other posts have made it abundantly clear that it is a non-issue.
Homer is one of the best rated halibut destinations in AK, that is why I selected it. If you've got a recommendation for another, I would welcome it.
Again, I am acutely aware of the costs and the time involved. It is far less expensive to fly and rent. However, the drive is part of the adventure, along with the planning, provisioning, packing, etc.