Wow, I really hate to burst your bubble but you should have asked these questions before you embarked on this journey. Since you only have 2 tests left I would complete it, B&R and Networking are the easiest of the lot. Where does it say you need "training" in order to get certified, I didn't.

Having a background as a DA is great, we have DA's that transition over to the DBA path and that background helps them have a better overall scope as a DBA. Can't you transition at your current job? Is there a DBA group there?

The topic of "How do I get a job with no experience?" has been beaten to death, rolled over, and beaten again in here. I think your best bet is to try your current location. Complete the Cert, and go in there with some fuel. At the very least management will notice that you took some initiative.

MH