I had thought about the Allen rod case but used the Allen backpack. It fit 3 reels, my fly box, 4 boxes of line, my eyeglass case, a paperback novel, a go pro style camera with a underwater case, 2 hats and the 2 rod tubes. My wife carried our third rod tube.
I may get the case for future trips but this worked out pretty good for first time.
Here is the link -
https://amzn.to/3Cgw3CB
I also brought this waterproof bag for the boat, to keep our phones, sunscreen and stuff in. The only thing was that it got hot inside, so we would toss it on the top in the cooler to keep it cool -
https://amzn.to/3nskpPa