There are some very good discounts on single-family at the moment which leads to the biggest thing to pay attention to - price - You make money when you buy, not when you sell.

The biggest issue that I found was power.

Not all RE markets are impacted by foreign drivers, but rather the biggest markets, especially over the last decade or so.

The biggest issue is that it sounds like you are failing to inspect the property.

As a landlord, I know the biggest headaches I face is when I have to turn and show a unit, so maybe catching one at that point will yield a deal from someone who is "sick of it"

The other disadvantage of taking advantage of all the tax advantages, property taxes, mortgage interest, depreciation and other tax breaks your tax returns show little revenue.  

If you don't have a local mentor find someone doing what you want to do that you really like and become their best friend and biggest supporter.

If you are planning to rent the property, show the property’s potential revenue, expenses, taxes, etc.Show that you have analyzed your financial health.

It's the biggest task I have on my plate for the upcoming years and I have somewhat of a plan, but still trying to figure out the best and most efficient way to get good used homes into m parks at an affordable price.  

Negative cash flow would be my biggest red flag on this deal, unless you have a strong plan to bring it to positive cash flow.