Filters For WMO

Were would I go about getting the right filters to filter all my WMO down to 5 microns or below. Can I just use a regulur oil filter, or do they make special ones??

The set up I am thinking of running is going to consist of 2 filters and a water seperator. Have an electric pump pull the oil out of a holding tank and send it through the 2 filters then though the WS and then on to its storage barrel. Does this sound like it will work? Any suggestions??

Thanks Chris