Has anyone had success taking this approach (mixing rentals of 30+ days with typical STRs)?

More of a sniper approach vs shotgun.

Does anyone have a good way to approach a situation like this? 

I am a notary public who is ready to go direct with placing my business with title and escrow companies, I want to know what will be the best way to approach to receive business

it would have to be something big and undisclosed, and you typically walk away from that, sometimes the seller will accept (negotiate) but it is a harder approach.  

You would have to talk to someone who's extremely familiar with this approach and find towns with favorable laws before starting.Other than that, I live and invest in New Haven county and host a monthly meet-up in New Haven for investors.I would be happy to talk & help anyway I can, I'm a licensed contractor & realtor, currently helping a couple other investors find properties in New Haven for traditional buy & hold investingBest,Ryan

How should I approach the subject with the one that is moving out?

I would also recommend picking your preferred investment strategy first, then find a market where the data supports that approach.

Our attention to detain and hands on approach to the renovation is what made this deal flourish.

This is vacant and was damaged during a flood with large front and backyards.1) should I approach this as a typical SFH rehab, but multiple the estimate by # additional units?