That's not a crazy angle.
Funny that we have a consensus about the best angle for a B72. I had one many years ago, and without having this conventional wisdom, I discovered it by myself, so I definitely agree.
I just acquired a B72 again and am SO happy. I'm going to put it on my commuter bike.
The original spokes fit?@?!!!!!
Hooray, that'll make it easier and cheaper.
I can't guarantee it will work out for you. I was lucky. This wasn't an English bike. It was a German three speed with rims I didn't recognize. But it's worth a shot.
Some will question the wisdom of reusing 55 year old spokes, but Jobst Brandt has said that if they're not fatigued, there's no reason to be afraid.