I still find the rents to be strong with a fairly decent tenant pool to choose from.

Find out what it costs to fire them (ie break the contract early). 

Cash out refi will be tough due to the price, not sure if there is a local bank you can reach out for the financing.

Non-payment of rent is always the path of least resistance to get someone out in a somewhat timely manner.

Please let me know who you have worked with and why you like them (How many properties do they manage for you, how long have you worked with them, what you like about them etc.)When the unit is vacant, do they cover the cost for professional photography to rent it out again, or is that an additional fee? 

Best thing would be to get started hustling for another wholesaler to see if it really is what you think it is.The only way to be a good wholesaler is to build relationships with sellers, know repair costs and ARV, and understand that each seller has a problem to solve and do not need a cash offer.

New build maybe a bit aggressive getting into real estate unless you have a builder as a partner in a deal to see the full steps or stages that go into new builds.Why new build?

@Andrew Nguyen, the contract you signed allowed them to do that?

As a PM with 65 Units my core PMS is over $5k per month. 

Welcome to BiggerPockets, Douglas!