Congrats! I'm doing similar with my recently acquired 90 ZR1 with many more miles LOL, nice list thank you.
I'm not familiar with HR3 oil, but do see this re: ZR1 oil and need for high zinc content because flat tappet motor: (I went with Amsoil AMO 10W-40 for first oil change based on document content)
http://www.zr1specialist.com/HAT%20W...5%20Engine.pdf
Beyond checking tread depth on tires check for cracking and date code, a lot of concern on running on old tires, many threads.
Have fun!!!