So what kind of time do you have. 5000 hours of what? How old are you? Work experience?
Here are some minimum requirements. There are very, very few pilots currently working as a Test Pilot that dont have the following
BS in Engineering, MS preferred
Experience in Flight Test, especially since you are not a TPS grad. Virtually no one starts as a test pilot without being a TPS grad or working for years in the business.
A strong background in Part 23 or Part 25
A bunch of relevant flying experience. If you are looking to be a jet test pilot, you would need 1000+ hours of jet PIC time.
Know someone in the business. This is one of the most interconnected groups in the country. I would bet it is less than one degree of separation between every working test pilot in the country
I would be happy to give you more information if you like. jimflyfast at comcast dot net.
You can also look at my website to see my qualifications to be making these statements
www.mmoaviation.com