I think the best way to get good at fighting in MMA is to:
First, practice MMA
Second, fight MMA
NOT:
First, fight MMA
Second, then learn MMA
You should train before you fight not fight before you train. I don't understand why so many people do this. I understand you have wrestling experience but if you haven't even grappled a BJJ guy you may get your arm ripped off. Wrestlers leave arms hanging all the time.
Good luck and I hope you kick some ass...