It sounds as if you have a Good young Man there Grim.
I think you should ask him if he is ready first, Let him look through the scope with the Crosshairs on the Rabbit and see what his reaction is. If he is comfortable and at ease, then he will take the shot calmly and collected. If he is unhappy, he will leave it for another day.
I'm not trying to put Liam or yourself off, but make sure it is not pure enthusiasm and that he has given it a touch of thought. If he is in his comfort zone then he will have no trouble.
Let us know how you get on.
And just take it easy, at 9, th