I will be selling my primary residence and I’ll have about 100k to play with .

I've played around with Reddit a bit... but not with regard to buying ads.

Then, you can go and play around with some variables to see what effects what and how much on the spreadsheet. 

They might, but have no duty to do so as both parties know the senior survives.I can state with certainty that's how it would play out in California.

Non-bank lenders underwrite to the property's cash-flow (and most don't have an income requirement at all, it just plays a role in the rate you receive) and they do not look @ your tax returns, personal income/DTI.

So I would take a few minutes and layout your long term goals and how you want real estate to fit or play a part in your goals. 

How does using an FHA play into that?

No fuss, and no issues.Furnaces are plug and play.

The play emphasizes equity a little more than cash flow.I live in Mequon and we invest in the suburbs; so obviously I believe in the advanatages, but with higher price points, a noticable smaller tenant pool and therefore more time to fill compared to Milwaukee, it comes with its disadvantages as well.

Now the real question after saying that is "when is the down turn"All down turns where right after a false flourishing economy (aka the correction), always when governments play God to manipulate the natural economy, always always it will get things jacked up.