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Make what you want. Call it what you want. You don't need anyone's permission.
No, they just have to be initially published as soon as they are finished. Once all of the tracks are published, the Pocket Record can be re-ordered.
No. Many people believe that mastering is best done by a professional who was uninvolved with the production, for an outside perspective. As long as each track is published before the next is started, they can be professionally mastered either one at a time, before they are published, or as a whole album and re-published as a finishing step.