Andrew,
Look up the HondaMan electronic ignition in the search box at the top right of your screen.I'm recommending it because I own one.The unit has lots of strong points and one of them is the original points are still in operation w/ the stock advance curves that Honda designed into your bike when new.
I think there are lots of different Electronic systems that're good,but I like His for various reasons,the main one is:the Original ignition points last a Very long time,they don't burn out anymore and the amount of times you have to re-adjust the points is maybe once a year,I can live with that.The other electronic systems can burn out and leave you stranded somewhere,but HondaMan ignition has a safety feature where you won't get stranded.
There's lots of info for them on this forum, use that 'search' feature here on the forum and check out the pro's & cons of all the systems. I recommend the HondaMan
unit.
Bill