There might be an upside in the lending process to say that you are a licensed GC, but there are plenty of options without it as well. 

My approach was to partner with a GC, so he handles the rehab estimates with his years of experience.Another option is to read J Scott’s book on estimating rehab costs.I've heard a lot about this book.

You *can* use an option to purchase. 

Online options: Many counties have online access to property records through their official websites.

You could explore triple net leases, purchase BRRRRs, or buy 1-4 turnkey rentals, among other options.

Wholesalers use the “option” clause, inspection clause, or a specific “weasel” clause to terminate the purchase contract if they are unable to contract with an end buyer at a higher price.  

Here are some other deals that other retailers are offering as a option to Prime Deals.

If you’re considering this step, consulting with a financial expert to evaluate options tailored to your situation can be invaluable

Another option would be to keep the purchase price at $140K and bring a check to closing for your broker.

I've personally tried a few options and the best has been Smarter Contact.