Is this a cash-flow play or an apprecation play?

Without doing a deep dive explanation on this forum, I will say that everyone can play with numbers to create whatever picture you want.

It's playing with plutonium.

Cash flow is real, but it’s often a long-term play.

Your tenants obligation was to pay you on Jan 1, so it doesn't matter if they paid someone else they still owe you...obviously details re: notice and dates all come into play here and from a practical perspective I'd work with the tenant and not move to evict over this.

If your new servicer wants to play games, file a complaint with the CFPB and dispute with the credit bureaus.

And dont know about Ken.. but his partner for sure was very versed in sub to.. the information was accurate as we both kind of played in the northwest sandbox . and before sub to foreclosure rescues / rent backs became illegal in about 08 I personally did a few hundred of them. 

For example I know many who are now just lending because they are getting 10-12% short term which is far better than any cap rate on real estate. you do not have the equity upside as you do real estate but its a way to play the short game to see what happens over the next 12-24 months and decide when you want to buy.

One thing to remember is the flipper will have $30k- $40k in financing during flip and closing costs to buy the home then another $25k when they selll so that will play into the numbers that need to be considered. 

You will not have the rate long enough for it to interfere with your current and proposed profits.This is where having a good team comes into play for example having a seasoned realtor who knows the market on the purchase/ARV side.