You shouldn't be picking long from a site. If you're going to play long don't just give it up since you're giving them free information and map control. Always worth it to play corner and take the fight since you have the advantage holding anyways.
If you need to peek long from site you should be doing it from behind site boxes where the graffiti is, or in goose, however both of those peeks don't let you see all of long but they cover you from cat.

You should only ever be playing car if they're going to be pushing cat and you've got someone holding long.