If it really is no trouble to just move on and find another place, at least get a signed lease termination along with your funds returned so he can't try to hold you to your lease if his sale falls through. 

Even if you get a quick court date, then they can file for a delay of 30 days (usually takes more like 45-60 to get back on the docket).

If you're able to invest in a market where people usually go for vacation in the winter like FL, AZ, Carolinas potentially, then you can get something soon and immediately be renting it and getting a return on your investment this fall.

But no one that stupid is going to ever get to the point where they are entertaining a 100-unit, so there's no point in trying to market to that person, they don't really exist at that scale (and, to they extent that they do, they aren't falling for real estate scams, they are falling for crypto/nft/blockchain/ai [+ next years buzzword, whatever that is] type scams). 

But there is certainly a "im ok with it" side and a "im not ok with it side" Just depends where you fall...

Where will your listing fall if you are a new owner manager and have no reviews?

Make sure to get an official term sheet and so not fall for the bait and switch.

But when I was an agent, learning some basic Python and VBA (Excel) really helped me save time in the process of collecting and analyzing real estate data.I've been working with technology for the last 25 years; sometimes you don't need sexy, you just need a tool that works.It's a sin that, we technologist, fall for often: searching for sexy instead of "this old thing just works" :)

Back when I was brokering commercial real estate 100 years ago I had a deal on a small office building fall through when during the walk thru just prior to closing the buyer insisted on checking the candy vending machine and verbally to;d us and sent us a follow up letter informing us that he wasn’t going to close because the Baby Ruth’s in the candy machine were stale.  

If we then have another meeting that we are pre signed up  and have paid for which is on Wednesday, the expenses that my wife and I incur on Tuesday are deductible because it is considered a work day since it falls in between 2 separate days of meetings that are directly related to our business.