Here's an update of what I decided to do, just because it will save me time. and I will be able to work quicker and save some trees along the track ;D.
1-I draw the keys and contacts on paper
2- Scan In
3-Paste each drawing on flash and time it with the animatic/video block
4- draw all the inbetweens, work my arcs and get the movement right
5- Draw the character over the skeleton made.
6- the result below...
I am quite happy about it. Plus I realized after inking the paper test I did, that the lines I want are very similar to the vector lines that flash generates and gives me the gitter on the lines that I was looking for. The other positive side of it is that I will be able paint each frame in photoshop and give it the watercolor look and each frame will come with an alpha channel that paper doesnt have (obviously).
So I will continue with this technique.