Two or three of the quests can be done at the same time at the same place, so it's more like +100/150 rep. Have a bot that changes cells when monsters are all dead and getting to rank 10 is actually very fast. The monsters die in one hit by most classes especially if you're level 65. You're botting anyways, so if you're a completionists like me just go for it! lol
I botted rank 10 after one night of sleep.