2h15m seems to me like a very good time for solo 1-70... Did you do it on PTR with +2000% legendary drop rate?
I guess range skills are the way to go, so maybe you can work out a way with Weapon Throw? Other than that I could imagine going with Furious Charge after you get the rune with stack refunding. For Monk i dont really know, maybe hope for gungdo bracers?
As WD I assume that you used Haunt to make big chains, right?
Maybe I could give you some ideas, but my fastest solo 1-70 is around 4h so I wouldn't call me expert