Cheers guys.... I wasn't so sure about what wheels myself but one mock-up with wires convinced me that cast wheels were the way to go, and the spokes of the LC wheels being curved did fit in with the overall theme. Am still wondering if they would look better painted red (in part) though...
Running through the other comments.... forks & calipers are LC-based too, swingarm is by JMC with a White Power monoshock, and yes it does handle really well; anyone on here who's built something knows that test ride moment when you wonder if it'll all actually work and be any better... this surprised me by how well it does handle, it feels really planted and rigid and just kind of right. It is extremely light and that helps too, though it is a bit too compact for me. The headlight was meant to be a nos CB450 item when I picked it up a few years ago, but tbh I wouldn't know the difference from a CB77 item so who knows. No tacho indeed, but I can listen to the music...
Finally, as for the road, well although there are more fun ones to ride in my book, that is a pretty good spot for photos and the place also has a lot of history; at about that exact point the road is crossed by where the main runway of RAF Seething used to be, which was a WW2 USAAF base for B-24 Liberators of the 448th BG. The main runway actually crossed the road from left to right in that final picture, there are still several of the airfield buildings nearby and the control tower is restored and well looked after too.