David,
The Dutchman will work well, just be careful of the adjustment.
Personally, I think the cabin top would be a bad idea. As I mentioned before my lines run from the brake to the toerail
just outside the lower aft stays then aft to an area out side and adjacent to the cockpit. . It gives you a better mechanical advantage; I've seen whole traveler rigs ripped out of the cabin tops from an accidebtal or ill planned jibe.
Incidently, a few years ago the "Dutchman" donated one of his flaking systems to a local disabled sailing group here in San Francisco, Bay Area Association of Disabled Sailors (BAADS). A very nice gesture.
Good luck.
Dan