Norton MC Advice
In the early 70's I owned a series of 4 Commandos, 3 runners, one that was primarily for parts.
On the occasion that any one of those was in good running order, the experience was truly magical. To be slaloming along the twisty roads around the East Bay, and the occasional road trip.
I depended on the first of those Nortons to commute from Oakland to San Francisco. That particular specimen was about 70% reliable, but I can recall a number of strandings, a couple of which occurred on the Bay Bridge and a few others in various inconvenient locations.
To be sure those Nortons, as well as the 2 BSA's and several Triumphs that I have owned have good days; but you pay for those good days, both in terms or the inability to predict when you will have to either shell out a pile of cash or spend hours of your time wrenching, just to have that ownership experience.
My advice: Bring enough money in the first place to buy a 100% sorted out bike. And be willing to endure the inevitable times when that bike will make you wait in the driving rain on Hwy One, south of Point Arena, with a pint of Castrol in your right boot, or with a broken clutch cable or snapped clutch push rod, or grenaded crank bearing.....
And when you get one, be sure to have at least one modern, running reliable bike to ride, because you'll need one to ride over to the nearest British parts specialist...(are there any left?)
Why am I being so negative? I want to spare you the suffering....
here I am the day I rescued a '67 Spitfire and got it all the way home, only to start a bad 7 year relationship with it.
Like others have suggested, get a Hinckley Bonneville of some kind and make it cool. I took mine out on the Shoreline the other day and had a great ride, and guess what, I never thought once it would break down, and it never has....
See?
https://www.youtube.com/watch?v=GKaEnUmdjco