Advice to improve my sketching on an Intuos 5

Cool, I gotcha. If you want to run full apps on a tablet you could try out the surface pro 3 or 4, their screens are only a little smaller than the iPad pro and the pen experience is about the same. Probably something you already know but thought I’d mention it just in case. Good luck with the intuos, I’m sure you’ll be totally fine with it after a couple weeks of practice!