After I had finished the the twig i did a quick 360 camera around the top of the twig, to to get a feel of what its going to look like and what seed I sound do it at.

10 seconds seem a bit to fast to get a good look at the model.

15 seconds seemed much better but maybe a little to slow, so I think I will have it 12 seconds long and meet in the middle.

Before I rigged it I imported the basic model into the scene to get a basic idea of what its going to look like at 12 seconds long.

I think 12 seconds is quite adequate.