I agree; hitting that hole isn't too bad at all. The other thing I think deserves some attention, however, is the position of the 8-ball. If I were going to play that 3-rail shape, I'd really like to hit the bottom rail as quickly as possible so as to be sure to avoid the 8-ball on the way uptable. Unfortunately, the position of the 7 forces you to come into the bottom-left corner at a more shallow angle, which, it appears to me, brings the 8-ball into play, and a collision with the 8 could very likely get you hooked behind the 5. Obviously, these things tend to look a little different on an actual pool table, so I couldn't say that I definitely wouldn't take the 3-rail route, but I know that the combined positions of the 7 and 8 would be a big concern to me.
Conversely, the position of the 5 would be a concern to me if I were planning on zig-zagging. When weighed against the potential for either scratching off the backside of the 7 or hitting the 8 and getting hooked, however, I think I like my odds on the zig-zag better than the 3-railer.
Thanks for posting the layout, btw, these things are great fun.
Good rolls,
Aaron