I love those tablets. Just because the interface is interesting and sometimes better. Canon makes very nice camera's so I don't think you can go wrong...their photos are always nice. You may want to upgrade to a new body sometime in a couple years so buy EF lenses instead of the EF-S lenses that aren't compatable with most of Canon's higher end DSLR's.
Software...PS7 works great. If you know how to use Levels and Curves especially, which aren't hard.
Good luck with your new and exciting hobby!
Glenn
Designer of DBGallery, the photo database system.
"An excellent system for organizing your photos."
www.grrsystems.com/DBGallery