Up to 85% (or less) of Social Security feeds into taxable income based on combined income formula.  

Combine that with everything from the first BRRRR and the information begins to compound.

@Michael Gelatt I am giving these answers according to mortgage point of view, you have to contact your CPA for other concerns.1 You should be paying from your business account to keep it separate.2 You should combined both to cash out because you are refinancing any way. 

Is anyone in the area currently combining FIRE techniques (accelerated saving, index fund investing, etc.) with RE investing simultaneously?

Yeah...because they are crap.

If you try to combine a refi followed closely by a sale and 1031 the IRS have many times interpreted that as a way of taking profit out of the 1031. 

I'd suggest you form your own opinions of course :)  1) Kelowna: Has a strong rental market, but It may be tough to find strong cash flow on a property with only one suite.  2) Kelowna: The summer Short term rental combined with Off season student rental combination is making folks big cash flow right now, but it is growing more competitive.  3) BC: I second the comment made by @Brianne H.4) Vernon:  If you spend the time to look you can find deals here  5) Have good Math

Other crap like a cat in the bedroom or putting a bed in the storage room is not important.

Is it possible to combine the FHA 203k and the BRRRR strategy?

catch them just starting to treat the unit like crap you nip it in the bud.. once U get a base line on a particular tenant then U can modify either for frequently or less..