Is there an online, paid or free, system that I can input the 20 town names and then filter to locate parcels over 5 acres? 

It's in the auto repair business, where I had no experience, but the owner I'm buying it from had no prior background in it either, he was Russian immigrant who started here as a taxi driver, saved up enough to open up 3 shoe stores, but sold it all when his wife was seriously injured in a robbery.One word of advice.

I would HIGHLY recommend you find them online and reach out to them for their input.  

I just read some article online about this.

To preface my replies, I am observing from afar using a variety of online tools and my assumptions might not be totally accurate, so thank you so much to all you local experts for lending me your advice. 

I looked into paynearme where  you can go to a local store to pay your rent with cash with a small convenience fee but this service no longer provides direct solutions to landlords.

Because spending on in-store groceries surpassed spending on dining-out during the Covid-19 pandemic.

Use a rental calculator (like the ones on BP or others online) to see if it can be profitable for you.

I'm working with some investors now who are looking to buy an investment property to simply "store cash" so that it appreciates with the market instead of losing value.

I've seen several in the Johnson County online record search.They seem to follow a standard template listing legal address, grantor, grantee.