Welcome!
1. Are there any early bikes with black engine?
2. Change tyres, they are very old, it's dangerous to ride them.
3. It's no need to use expensive fluids and oil for Rocket, it's work wounderful with simple semi-sinthetic automotive 10w-40 oil in 3000-4000 miles interval API SH or higher.
4. HOAT coolant (G11), 2 years interval.
5. In final drive unit I use 80w-90 GL5 mineral oil, but manual says 75w-90 sinthetic GL5 oil is better.
6. Get ready for fork, brakes, pump and engine oil leaking due to old condition of seals. It's not large problem. In my opinion, 10w fork oil with stock spring is the best choice (5w ractory filling), brake fluid DOT 4 enough.