The admission and evaluation process at OU is, shall we say diplomatically, sub-par. It takes far too long and there is not enough information passed back to the applicant. In my case, it was a full 6 months before I got my final DARS, by which time I was already into my second class at OU. In the intervening time, I had numerous contacts with OU personnel, some of which were unsatisfying but some of which were helpful. If you look back through the initial OU thread, you'll see that I was among the vocal critics of the OU program in this regard. Many, if not most of us in the program have had similar experiences with the OU admission and evaluation process.
That aside, the end result at OU is almost always very fair and equitable. In my case, OU had to evaluate transcripts from 11 colleges but at the end of the process, I had gotten either the transfer credit or the exemption for everything that I had expected. This was not the case at another well-known college in the Lone Star state (and which was actually my first choice) who were very quick with their evaluation but required that take a take at least six additional non-nursing courses. This particular school would not give me credit for my intro Psych course because it was called Psych 001 - even after I sent them the catalog description and a letter from the vice chair of the department confirming that it was indeed the intro Psych course at the school. OU on the other hand, actually looked at the catalog and gave me credit - I did not have to send supplemental information. This process took a long time, but as I stated earlier, the end result was very fair. If you look through the postings, you'll see similar stories confirming this from a large number of students.
You will be contacted by an "enrollment advisor" once your application is in place (sounds like this may have already happened). This person can check to see if OU has received your transcripts, though you should also get e-mails telling you what's been received. Once all of your transcripts are in, the acceptance decision happens fairly quickly and you also get assigned to an academic advisor. This person is your friend and will help you - if you let them. Mine was great, and was a key element in the process. In talking to her, we found an error that may not have otherwise come to light and corrected it (I had both graduate and undergrad credits at one of my prior schools - for some reason, that college sent only the undergrad transcript initially). Throughout the process, I had the distinct impression that my advisor was seeking to be as fair as possible and that I would get an equitable evaluation. I was right. As I've pointed out, this is not always the case at other schools.
So my advice is to contact the enrollment person, make sure your transcripts have been received, then wait for your acceptance and give the evaluation process time. You will almost certainly have to start classes before your final DARS is available. I was reluctant to do this but eventually relented, based on what I heard from other students, just as you're doing here. The program is generally pretty good but does have some serious flaws, as you can easily see from the postings on this web page. Overall though, I don't regret my decision and suspect that the overwhelming majority of folks in the program feel the same way.