Personally, and what I would do for my clients, I would connect with a local community banker to discuss the property and see if their bank would entertain this type of financing (not all banks like doing this type of deal).

Seeing as how in today's society the rich get richer and incomes aren't keeping up with the stock market, people in rich areas can afford richer rents.

This is why so many people earn large sums of money quickly (lottery, sports, entertainment, etc.) and end up broke.Take Dave Ramsey's Financial Peace University.

Focus on affordable markets, build a strong network, and continually educate yourself through books, podcasts, and deal analysis to steadily expand your portfolio.Good luck!

I can afford to invest in B properties with larger down payments but I guess it means I may be doing more like 2-3 deals per year than 3-4.  

We all invest in real estate in order to make money, and keep in mind that someone who can only afford to live in a mobile home and seller-finance to buy the land is probably tight on funds. 

As others mentioned can you afford the negative cash flow?

If they want to leave, for any reason, they just have to pretend they can't afford the rent.

However, with the disclaimer above, I'll, for entertainment purposes only, provide some thoughts on rents in the US for the next few years. 

For example, Southern Spain tends to be more affordable than the north, especially if you look at rural areas or small villages.