There are several "real estate programs" out of their that the FTC made return millions to people. 

I'd probably find a board certified real estate attorney to do it. 

And when you combine that with buying off market going direct to seller, you can build a real estate empire while being vertically integrated.All of this aside, whatever market you decide to invest in, please be sure to develop a relationship with a reliable contractor and a project manager.All the best!!!

I have found some of the best contractors from Facebook groups in the local market for example "Real Estate Investors of Oklahoma City".

Quote from @Aj Green: Quote from @Gregory Wilson: The real issue is how much of a deposit do you have to try to get back from them.Sure, your contingency might work but I assume you gave the deposit to the seller.

Does anyone have a sample of an assignable option contract for real estate that I can use? 

First off, congrats on being in a position to scale your real estate portfolio.

Most real estate investing books will answer this question, and there are a lot of blogs about the topic.

House hacking is a solid way to get started in real estate investing. 

If you are able to actively use the funds I would say start a real estate marketing company with it.