My keybinds are the following: 1-5 Q E R T, ctrl 1-5 Q E R T, shift 1-5 Q E R T
Stuff that aren't used a lot are bound to 6-9, for example Defiance and signs.

The regular attacks are bound to 1-5 Q E R and the cooldowns and less used actions are bound to the CTRL and SHIFT ones.

Current keybinds and HUD layout (Large Image, right click and view image for full version):