4DSC is right. You need a mild abrasive to get rid of the light swirls and scratches. The #7 might hide them, but far better to get rid of them.
You have tons of choices. Pick a mild abrasive and work back with more agressive ones if you have to until they are gone. About the gentlest I can think of is GEPC. Menzerna Final Polish would be a good choice--very light cutting action and nothing to hide the swirls, so you can tell if you are getting them out. Products labled as swirl mark removers often have both abrasives and oils to fill and hide the swirls. AIO would clean out the fillers and you might find that you still have some marrings you thought you had erased.
You certainly wouldn't use AIO after #7, although I don't see why it wouldn't work under #7. But I would skip it. If you polish out the swirls and scratches, your paint won't need AIO's cleaning action.