Looks nice. Could you give some details about the chainline and the bottom bracket spindle length you've opted for (edit, actually this is an external BB crank, isn't it?), plus how crank arm clearance compares to that of the original? And it'd make for a better organized thread if added details are edited into original posts so all info is easily accessible.

I've been looking at older square taper Campagnolo Record and Chorus cranks and it looks as though chainline and Q-factor ought to be near enough equivalent to shimano cranks using an ISO taper BB of 111mm and chainring on inside of crank, however, availability of suitable chainrings (135 BCD) for single ring setups is questionable.