Not to split hairs here... (Which means, that is exactly what I am going to do)
I almost always advocate following a CR.
Just not with this situation.
If you would follow a CR to learn his line, you are going to just watch the CR.
The minute the CR is not there, you will be accustom to going faster... Then you will still freak out and go off into the grass... but now faster.
Definitely work with an instructor.
Have them assess you.
I just fear having them tow you, will lead to a crash.
X - If he's doing a MotoVid day, then this would be correct, as they differentiate between CR and Instructor roles/duties. If he's doing a NESBA day, then the CR/Instructor is one in the same.
Buell 1125 - you need to learn to TRUST your bike, and yourself. You said something about giving it more gas, and leaning more in your post. You don't really want to give it gas while you're trying to lean the bike over. Just make sure you're on the correct line and be smooth in your controls. You can give it maintenance throttle, but don't try to accelerate until you can reduce lean angle and can see your exit line/point.
Following a CR is a very good way to see the lines and push your comfort zone a little, but Xian is correct, once the CR waves you by, the decisions are now yours to make. Following a CR is the time to look for/learn your braking points, turn-in points, and line references, so that when you're on your own, you know what to look for.
When in doubt - LOOK THROUGH THE TURN AND LEAN THE DAMN BIKE!!!
Take things one step at a time, and build your skills and knowledge BEFORE you try to go fast. The speed will naturally come as you improve your fundamentals.