That is very well thought out. I'm still searching for that local road that I can carry that kind of speed on. There is one, but it's extremely residential. Without closing streets off...
Most times, on two of my favorites, 1/2 mile of free reign, low 50's.
I haven't seen your kind of speed since I was a wee lad. My speedo was a two button Avocet. We'd switch the top cover with another and have a multi-color.