My unsolicited advice: rather than being "fairly certain" that you can make $500/mo with your idea so that you would prefer to start a company first, I suggest that you reverse the order of operations.
First, be certain that you can make $500/mo by building it yourself and get the hospital paying $500/mo.
Then, if the opportunity looks good, start organizing (aka building an organization, a company) around that.
First, be certain that you can make $500/mo by building it yourself and get the hospital paying $500/mo.
Then, if the opportunity looks good, start organizing (aka building an organization, a company) around that.
You'll short circuit a lot of pain that way.