They took a week, ordered almost everything online and created a very 'beachy' home.

While that is a very popular sales technique, no good deal ever came with a contract that you're required to sign right this minute.

If you're interested in pursuing a career in sales, whether obtaining your real estate license or becoming a wholesaler, you must be in it for the long run.

As for mentoring, maybe check out local investment clubs or online communities like Reddit's investing or personal finance subs.

Tom Wheelwright’s books contain more detailed information than the online courses do.

In order to make that happen, we are considering selling the land and taking what little profit or equity from that sale, and saving up to purchase property in this other location we decided would be more suitable for our retirement.

I cringe when people say "it is all the same" and just buy the cheapest stuff on sale at Home Depot. 

Your cost basis per sale will be 10 x $3,690/acre cost or $37k.

Also, local real estate agencies sometimes have rental listings not advertised online.

Consider pre-loved appliances from reputable stores or online marketplaces.