Paramed examiners

I'm an RN that has a full-time hospital job, but for the last few months I've been doing some paramed exams on the side that deal with life insurance exams, blood and urine samples, taking BP's and such for these life insurance companies. Problem is I do this work for a company that doesn't seem to pay well. I have just been wondering, what if I were able to set something like this up on my own and contract with these life insurance companies myself? Possibly "franchise" with the various paramed companies such as APPS or Port-a-med. Anyone have ideas or experience with this?