I agree. You need a coach bud.
I am also a former wrestler with 12 yrs exp. and I can tell you that although the wrestling comes in handy it wont help against the BJJ. Take some time and get some standup skills and roll some BJJ for a while then fight. If you go in and get wiped up your first time it may affect you phsycologically for your next fights, if you fight again that is. IMO learn first then compete.