There's just a few things that I'd like to point out that might make your experience selling around here smoother. For starters,
Good to know.
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Yes.
Could have been, and should have been a single post. You posted the second less than 10-minutes after the first and have the ability to edit/amend your posts.
Other than that, I noticed you posted a good amount of pictures - the only problem is that none of your pictures include a date/timestamp or username. Are you able to post a picture with that for better verification?
Last thing I can see at a glance is that your S/N is visible, and that's something that I would advise against publicly displaying personally.