I've used them several years and find their company size to be the perfect mix.  

this is advice my daddy's real estate attorney gave me and him back in the middle 70's deals are like street cars there is one on every corner.take your time do not be in a rush.. do not get greedy and chase the highest returnssticking close to home is often a good strategies and Real estate is not the end all be all there could be some other opportunities that present themselves especially in the tech heavy area you live. 

I have a mix of high efficiency and standard 80% furnaces in my duplexes.  

I don't see this changing much of anything.Desperate sellers may use it, but often desperate sellers aren't the most tech savvy.

This vast wasteland, full of tech billionaires, beach babes, great tacos, and year round 70 degree weather, is just a horrible place to live. 

., good mix of fun experience and cash flow)?

First tech is the only bank locally that I know of that does heloc on investment property. 

Your issue is that you are mixing business with charity.  

I don't believe it is a good idea but I have heard mixed results on this.

I plan on doing a mix of flips and buy & hold / BRRRs, and am setting up my systems to allow me to do multiple projects at once.