In this day and age castor has no benefit over high quality, 100% synthetic oil.
Especially for a weekend warrior. Synthetic has little to no carbon buildup, less carbon cleaning. Castor is a vegetable oil, and left sitting on a shelf too long will go rancid, just like any other vegetable oil, while synthetic is fine sitting for years.
Motul 800 2T is great stuff.
For weekend warrior stuff, track days and practice, I see many people using pump fuel.
Why waste the money, but make sure you don’t have any detonation or it’ll cost you later.
The VP is inexpensive insurance; no ethanol, and the lead does lubricate, so if you can afford it and have easy access to it, why not spend a little extra?