I am a big fan of doers . . . and triple Webers! Not to mention the perseverance to stick with one's vision even when the realization takes time. To cut up your prototypes in order to tick and tie the details on the casting internals is proof enough for this inliner that you are serious about getting this right.
Are you really going to try to fit a dizzy to the hot side of the engine? Some of the earlier photos suggested so. Coil over plug with a crank trigger might prove easier - though hardly vintage . . .
