How to jump between Spaces on OS X when some are Fullscreen?
I'm afraid it cannot be done natively.
The closest you can achieve is to jump the last regular desktop with  Ctrl ⌃   [num]   then
 Ctrl ⌃   →  from there.

The difficulty is that fullscreen apps don't have a Space number, so you cannot add a shortcut key.

My personal solution is to simply never use fullscreen apps, I find them more trouble than they're worth.