You CAN do all the stuff you're hoping to but it takes some time to figure it all out. Well, it did for me...
I was hoping you had the Gumboard running because I haven't done any patch work without it for years so it will be pretty hard for me to give you any guidance.
I had a quick look for tutorials on the dual channel thing but didn't really find anything, unfortunately.
In order to accomplish objectives b and c, you need to figure out how to use "assigns" and the manual is not very good on that subject either. There
were some decent Youtube vids on that subject but I haven't looked much lately. At one point, there was a GT forum that had some helpful stuff but I don't know if it still exists.
Try this tutorial on assigns :
Note: As far as most features go, anything you can find about the GT10 will also apply to the 10B.
I wish I could be more helpful. Good luck.