I ride ATV’s quite a bit myself. In my opinion there really is no cross over as far as handling an ATV vs a Motorcyle. It’s a completely different set of skills other than the shifting, if it’s a manual ATV. That being said if you are a person who is confident and skilled at handling an ATV then most likely you will do well on a motorcycle IMO. In my experience on ATV’s you spend a lot of time focused on what’s immediately in front of you, where as on a street bike you need to focus on where you want to go. Of course most of my ATV experience is slow technical trail riding and mudding on 4×4 quads. From your decscription your into a different type of riding so it may be something you can apply to street riding.