A healthy dose of skepticism is good, but usually they want you to have the best experience possible.

If he has the income to support a $550k mortgage, and a healthy cash reserve fund, he should invest the money.

Quote from @Lizie Pilicy: I'm considering investing with Kris Krohn and stumbled on a few BP threads.I'm curious to know anyone who actually has experience with Kris could chime in with reports of ROI, etc. and if investments are still healthy and doing well? 

Expediting the depreciation with a cost segregation study can add a healthy amount of cash flow in the first year to 5 years when you need it most. 

It's better to preserve a healthy relationship with the tenant than save a few bucks.

If you don't have a healthy amount of cash then you're adding a lot of risk to the deals you do. 

If the property has a solid inspection and a healthy maintenance budget can be set aside, these older properties can be very profitable.

In healthy markets, they may be just one of a dozen Google ads.

In some cases, anonymity is healthy, but this depends on your preference.

I'm in a space to do some house hacking, and am under the general (unresearched, unless you count years of Zillow watching) opinion that my local rental market is healthy.