My impression is the OP isn't a trader and doesn't intend to be one. He just happened to have a little money, have heard prop shops have potenatial to be hugely profitable and is looking to set up a prop shop.
If the above is a good guess, what you need is a partner whose credentials as a trader you would not doubt. Above all the person should have unbreakable discipline. As usual, the best criteria is a history of success in trading business. If the budget is insufficient to lure such a person, an executive recruiter may be helpful at creating a shortlist based on whoever is affordable.