Some really great suggestions in here, I appreciate you all sharing your methods with me. I will likely go with the oversized sheets and get a binder to match.
Some mentioned storage inconveniences prompting them to avoid or give up on this format and switch to another layout; I've given it a great deal of thought and I think the P67 is the best choice for my needs. While I did enjoy the Rollei SL66 I dislike square, and even in 645 Hasselbad does not meet my requirements.
I would have liked 6x8 or 6x9 but have found nothing that met my needs. So, a P67 is it and I think it will be an excellent choice, especially with so little waste when printing to 8x10, 11x14 and 16x20.
Now I just need to make images worth looking at.
Thanks everyone, if you think of anything else please add it in.