If you go for a Hydrovane go for a 5 series, plenty big enough and many are on single phase.Search on ebay for hydrovane 501

Don't buy the tripod mounted ones, get the tank mounted.

They are different, the tripod mounted ones unload the compressor when pressure is reached so the motor runs all the while.

The tank mounted units have pressure switches.

I run two 5 series side by side but only run one at a time however both tanks are coupled so I have plenty of air.