You could possibly manage without the front beam if you sailed it Uni rigged with a forestay to each bow.

I think the skegs on the Quattro 16 would be a source for frustration if you canted the hulls..
But, if you want to experiment, why use an old design like the Quattro hull forms ? Draw up whatever hull lines you like and strip plank the hulls yourself. At least, that is what I would have done.

Or, you could get the plans for the Taipan 4.9 and use those hulls. They are much better than the Quattro in my opinion.

Good luck!