You could try to track down 2 of those 1000w Power supplies from HP (they typically come with breakout boards for miners). I would check amazon or eBay. You could also try running with one of Bitmains PSUs but they will be expensive in the aftermarket and wont be nearly as efficient on 110v. However, the real issue is that you really should be investing in a 220v line. The efficiency of these PSUs/miners are significantly better at that voltage and seeing as how youve already investing for the miners, it would be worth looking into.
Heres an example of the hp setup on amazon (currently sold out):
https://www.amazon.com/dp/B019M4AOPA/?tag=blockoperatio-20Keep tabs on the power supplies offered by these folks:
http://www.centrix-intl.com/