The OP can put the original brake levers, derailleurs and shifters, and (crappy) stem and seatpost back on at any time. I debated over moving the "(crappy)" farther to the left in the previous sentence, but people around here can be a bit testy about such matters.
Nice upgrades. If it were mine, I'd probably have used some benign adhesive to run the computer wire up the inside of the fork for a cleaner look, but looking good otherwise. If I still had my '82 Reparto Corse Specialissima Supercorsa (and if it were my main or only road bike), I'd have long since replaced all the Super Record stuff.