The tape will do you no good when your reg/rec fails.
Apart from that, the electrics aren't too bad these days.....but old reputations die hard.
Slightly saddened though I am, by the prospect of a 750 getting the treatment, I nevertheless like your project and look forward to seeing the finished bike.
Probably a step too far but I think I remember that someone (louigi moto ?) built a monster "café racer" and used multistrada forks.
Perhaps not the best for that particular project, they would however (I think) offer a little extra length at the front on your bike, as well as possibly a softer set-up.
Just a thought.