What would be the minium start level for AFK Viper on a Lore Master? As well, what starting settings would be optimal? Thanks-

Any level as long as you are able to kill the mobs along the path. Settings are what ever you use to kill mobs, everyone is different, but you could use something like these for lvl 3 to 6

Start Fight:
Priority 0, "Sign of Power Command", Rest Default Settings

Single Mob:
Priority 0, "Burning Embers", Range 30, Rest Default Settings
Priority 1, "Staff Strike", Rest Default Settings
Priority 2, "Fire Lore", Rest Default Settings