Here's something else you might want to consider, that will make you likely feel awesome
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Debut authors are a hot commodity, because no one knows their work yet, they can be advertised as cool and fresh and new, they have no negative track record. Publishers LOVE debut authors. Now publishers love bestsellers as well, but there aren't as many of those out there.
What they don't love as much is midlist authors. Authors who have been published a few times, have done decently but aren't bestsellers and not earning the big bucks. It's way harder to convince bookstores it's worth giving an author of mediocre book sales a fifth chance than it is to convince a bookstore to give an up and coming brand new author who could maybe be the next big thing a chance.
It's actually EASIER to get published as a debut author than it is if you've already published but not done brilliantly well.
So, yeah, you're in a very good position indeed
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FYI - ignore blacbird, btw. Almost every agented author I know (including myself) had absolute NO credits to his/her name before he/she got signed.