I know this is a little late but I applied for the fall semester at OSU-OKC also. I took the HESI yesterday and it was super easy....it's VERY VERY general info so don't stress about it at all. I was so worried....scored 100 on the math and A+P and 96 on all other sections. I think people on here were trying to scare each other.
Let me know if you have any questions about the test if you haven't already taken it. When I gave them my score printout they said that the acceptance letters will be sent out in 6-8 weeks.
Also, the program is 2 full years (well technically 1 year and 9 months) but I think it's one of the best in the State. I think they take your GPA from when you apply but it's based on a points system. From what I can gather from your post you'd have 20 points (for your GPA) and I'm assuming you took History and English Etc for your other degrees? Assuming you did, plus all the other courses that go towards your degree you listed gives you another 37 points. Add 14 for science courses completed (I know, they count them twice) Add 2 more for the 2 courses you're taking AT osu-okc now and you already have 73.
Add to that whatever score you get on the HESI (as I mentioned it's super easy....especially if you're taking all those courses right now) 95-100=30 points 90-94.9=25 points 85-89.9=20 80-84.9=15
From what I've been told the highest cut off they've had was 91....so as long as you get above that you should be golden. So basically you just have to score above 85 on the Hesi. You'll do great. Good luck!!! Hope to see you in the Fall class.