So you want a fast, good ratio wep in your main hand to take advantage of the damage bonus on it, and the best ratio possible in the offhand. Given that, switch your main hand and offhand around immediately! Damage bonus is added to every swing, so faster swings=it adds to your total dmg output faster.
As for 2hb vs 1h, it depends. There are formulas on live to determine the trade study between them, but I won't bring it up here. Don't know if it is applicable or not. For the most part, pre PoP and raid weps I'd say 1hers are better, although a tranquil staff is pretty nice for low levels such as yourself. With PoP though, you can buy an entwood mace and the katar from PoS which is a very solid combo.
Once you get 65 with AAs, 2hb reigns supreme (maybe once you get time or some of the 20/19 weps from ele you can argue against 2hb). But you have a plethora of nice 2hbs such as:
Mithril shod staff
Rune etched bamboo bo
Fiery staff of zha
Staff from emp (much harder to get)
That will beat out all lower-mid range 1hers.
As for right now, wus is a great weapon. So is tranquil staff. I'd also recommend downloading gamparse and testing the dps yourself
Feel free to message me anytime for info.