Some input… Airless machines (likely what you are using) if set right should have very little overspray as long as wind is not present. But striper’s tend to get blamed for a lot when operating close to vehicles. From scratches to paint film.
As for rolling the paint… If you are using a waterborne fast dry paint it is likely that you will have difficulty rolling it. It likely will dry on the roller. If it is a high solid paint (Identified by a weight of about 72lbs per pail) you can add about a soda can of water to a 5 gallon pail to slow down the dry process for easier rolling.
I will let Dan answer your question more definitively from his experience.
