As a warlock, you really dont need hot keys. My warlock, Osirys, is 11, 31, 7 i think... anyway he is mostly demonology. I strongly suggest you respec to that until you get lots of + damage gear. My lock has 6/8 Felheart and a belt from MC (20 Stamina, +30 to Shadow spell dmg, 6 HP return every 5 seconds). My Succubus can solo Rogues most of the time, I dot + fear, she solos

. There arent any sets of armor though

. However there are some good single pieces of armor, and weapons you should try to get.
Robe of Arugal - Robe
Belt of Arugal - Belt
Feline Mantle - Shoulders
The cloak from the Mor'Ladim quest (+7 Stamina - You need stamina!)
Nightsky Cowl - Helm
Twisted Chanters Staff (+10 Intellect, +6 Stamina)