Ralph, I'll say what I said earlier. If you give us very specific questions that actually make sense then you'll receive some very sensible answers.
You've told us you have a unit you can use for free and £3k to spend.
What size is the unit?
What facilities are available at the unit?
What is the location of the unit like?
Are you hoping to run the studio as a business to give you a decent living?
Are you just wanting to set up a glorified home studio for people to use very cheaply because they haven't got the luxury of a home studio?