Very nice restoration work!
The only thing that I would add is that you might as well get the autolube system working. It would only be a few extra lines/cables/banjo bolt and you'd have a much better fuel delivery system than just mixing. I have the factory service manual for your bike in a .pdf file so if you'd like it I can send it to you but it looks like you know what your doing haha.
Would you be able to give me some pointers as far as the ignition system goes? I actually picked up a 1973 CT3 the other day and am in the process of getting it running The previous owner ripped out all the electrical and basically turned it into a dirtbike just like you are doing. I saw that you redid the magneto/ignition yourself so basically I'd like to do whatever you did.