To be successful at wholesaling, you need a solid group of cash buyers you can count on picking up the contracts. You need motivated sellers. And you need to know how to evaluate the property, make an offer that solves their problem, and pitch if to the investors. Use the $6K to answer those questions.
For me, I like to say I am an income stir and rehab resell guy. When I bid or buy too many properties for self use, I then offer the homes to other investors (wholesale).
This helps eliminate risk from the wholesale transactions.
You find a property and you put some of that money on an assignable or double closing contract and you find your buyer.
But you should spend the first couple of hundred getting your license. Get it done so nobody can complain. And it will be an education if you've never been in RE before.