What not to restore after fresh leak/official OS install

Ok been searching/reading tons of threads but getting conflicting answers
I've performed a full backup off my Z30 now I am about to install my first leak 10.3.1.2267 (got tired of wainting) with sachesi but first want to wipe the phone.

Anyway after I installed the new OS when doing the restore I'll perform a custom restore so I would like to know what NOT to include in the "application data" part of the restore to minimize issues.

Doing a restore after such a big jump in your os might give you problems, i wouldn't restore settings for sure as they are a lot different.

The less you restore the better, esp crossing a major revision