According to LSAC, no more than half of the applicants with your numbers were accepted last term. So, unless you're very confident with your soft factors, I don't think that you can be confident -- but you can certainly be hopeful.
Concerning the Miami fee, pay it. I might be going there, too, but I haven't been accepted yet
.. It's only been two weeks since I've applied, but still, I'm getting anxious.