You may have some oil spray, but at the low rpm of the starter motor, I wouldn't expect much oil pressure. Still, wrapping around the heads with absorbents may be a good idea.
As always, thank you for your knowledge! Will remove the cam chain adjuster to clean, check the points and check the valve clearance, and will try to individually check each of the things you mentioned.
A friend told me that I should try to find a mechanic to do it as only people with knowledge and vacuum machines could correctly measure and adapt my carbs' behaviour to the new UNI foam filters (bike came to me with the stock air boxes), the air pressure and temperature, etc.