Really like what you are doing there, love sleepers even if my own build surely isn't one...
I've had a 1100 Powerscreen as a daily for a while and I use a 1216 turbo'd version in my project bike, on both I had the same oil temp sensor mounted to keep an eye on things. Probably not the most accurate thing in the world but good for comparing... turned out she got pretty hot behind the full fairing! Allmost allways between 90-100 C, bit more in traffic and during one Autobahn session around 120.
Same type of engine, and the same cooler in my nekkid project bike, runs way cooler, allmost allways around 80 C.