I'm in Kanazawa and have been here for about 20 years...! Where are you?
You might try to find info/maps/routing for the Tour de Noto--a yearly three day event in late September. It departs Kanazawa and arrives back three days later--I think this year's schedule will be 9/22-9/24. Lots of road bikers on that, so what they do in three days might better be done in 5-6. Maybe you could go Kanazawa-Togi on the first day (about 80-85km) and then slow down to take in the scenery. Next night in Wajima, the nite after in Anamizu or Ushitsu, then down and onto Noto-jima for the next night and then back to KZ (again, around 85km from there).
There's a "yu-ryo-sen" from Uchinada to Noto, a toll road for cars, and there's a bike path that follows it out of Kanazawa up towards Noto, but it's sanded over in quite a few places--deep sand has blown in, which I'd never want to deal with. (The tour de noto doesn't use it.) I'd try to get up to the peninsula in a day on normal roads, and once you're there there are plenty of nice roads criss-crossing every which-way.
There are quite a few little-used campgrounds, also many minshuku (what I'd opt for). Email me if you want.