I bet you can do it! You've come a long long way with Cinny and your own riding ability in a really short time, I bet the two of you will surprise yourselves. And, on the plus side, it sounds like he'll be forward! ;)
I don't know if you're interested in a story but I'm gonna tell it anyway and you can skip over it if you want. :)
When I first got Lacey, she was super green. Green green green and SUPER hot. She was severely obese (complete with copious pads of fat and a deep ridge down her back that actually had grass trying to grow in it because of all the dirt that got stuck in there every time she rolled) so the saddle fit horrible (one English stirrup was 4 holes longer than the other, and they were completely even feeling from her back), so basically, I was trying to ride lil Miss Green Perpetual Sugar High in a saddle that wanted to slip under her belly really badly and took 3 people to strap her into.
Needless to say, I was terrified of riding her. I'd get on and she'd immediately take off, bucking, rearing, sidepassing, prancing, any kind of rein contact meant "back up, FAST, until you are sick of it": basically doing every kind of evasion in the book. But someone had to ride her and even though I didn't want to, my riding instructor said "you can, and you WILL, ride her" so, since I trusted my instructor, I rode that horse. She routinely scared the bejeebuz out of me, but I kept going.
Then one day I realized something: the faster my thoughts were going when I was around Lacey, the worse she behaved. I had never seen that in a horse before. I had never been around one that was that darn in tune to my continual emotional rollercoaster. I told my trainer and she said "Yeah, you just need to trust her to do the right thing," so I worked on trusting this crazy beast that was the epitome of everything I feared in a horse.
And, in trusting her I saw that she really wasn't bad, she was just looking for a leader, and when I trusted her I could step into that leadership role and be everything she needed. Eventually, I learned how to shut my thoughts down and calm myself. But even now, if she's behaving badly and being "crazy" I know that I need to reexamine what's going on inside me and fix me. It's really not that she's not hot or "crazy" anymore, it's that she has the knowledge that I trust her and that she can trust me to lead her well.
Basically, the moral of this story is: trust Cinny, trust yourself. He's your boy, he loves you. He's made sure you haven't fallen off when he knows how to make people fall off and when you've made it easy for him to get you off. ;) He's gonna be there for you, you just need to give him the chance to shine. You can do it, I know you can. You have a good horse, now just let him show you that he can be great. Just relax and even if he does a few "questionable moves" that doesn't mean your ride is completely worthless.
You're so gonna rock this clinic out of the water. Just remember to trust your boy.
You'll be in my thoughts!
Fabio - 13 year old Arabian/Lipizzaner gelding
Hazel - 14 year old Angora goat
Atticus - 4 year old LaMancha/Alpine cross goat
Rest peacefully, Lacey.