I tall depends on what you already know how to do, and how that will work as cross training and what not... and just how quick you are at picking things up.
Personally, I'd rate it at 9. I haven't been into magic for a terribly long time though (maybe a year, a little over?), and I hadn't learned anything but the basics before I got the trilogy not too long ago.
Get it though. it's an _awesome_ effect and I can't wait until I have it down smooth =D