Honda-SOHC

Sorry I slightly misunderstood your question.
As has been said the current draw of a modern H4 Quartz Iodine bulb might be a tad high, the other consideration is the dip pattern cut off  might not be good.

I am a fan of fitting an LED bulb as I did originally on my 400. Beware of cheap ones off eBay I had one that stopped working after just a few on & off cycles.
I sent a message to LED classics to find the right bulb as the important heat sink can cause issues of being too long when fitted either inside the light unit or outside. Again as the reflectors were designed for the build design Honda used there will always be a compromise in terms of scatter and dip cut off.
If you search the posts Oddjob did a lot of research on this with photos of the result of using different bulbs. I suspect like moths are attracted to light we are attracted to big Lumen numbers. In the end that's why I fitted a  complete headlight designed from the off for LED only use so the reflector gives a good dip cut off and a nice high beam plus low current draw.

Are the red and white wires shown the ones on your new coil as they look very long?
If they are then look at polarity markings on the coils themselves they should be marked +ve & -ve.
As the points earth the LT side of the circuit you need to ensure that the polarity matches.
So the negative side goes to yellow or blue for the respective coils. I would consider making up wires of the correct colour.

That looks suitably loud

It will at least sound quick if it doesn’t end up being that quick! Joking with my friends I have built the fastest, old slow bike in town!

Engine in today, had to have a test fit of my new Hindle Exhaust!

If its enough to spill out of the trough its enough, dont forget the starter is not spinning the engine at running speed and the faster the engine turns the more the pump works