I am just learning about my hull. But I do have pics of the inside of the hull.
http://www.classicseacraft.com/commu...5&postcount=82
I didn't have a tank deck. Like the others, I would be concerned with LCG. Some ballast forward and low would be a good idea, I think.
I am leery of an I/O, also. This is my first. I am curious to see how you do with a single big O/B.