@Dani Murai, while I can't give you a name of anyone in your area (I am not from there), when you are interviewing contractors, here are a couple things I have seen:I avoid any contractor that has a draw schedule based on percentages, i.e. 1/3 up front, 1/3 at halfway completed and 1/3 at completion.  

Regarding DTI - mortgage industry will alllow around 40%, but tenants tend to pay a higher percentage of their income to rent/housing than homeowners.

If all of your listings have that percentage year-round, I think you are possibly the highest ranked Airbnb host on the entire platform!

This will allow you separate business income and expenses from personal income and expenses.Since you plan to house hack your bookkeeping and tax return preparation will be more complicated because a percentage of your home expenses will be personal deductions and some will be business deductions.

He was happy to allow me to rent out nightly because it actually helps keep his property in better shape than a long term renter (having a cleaner in there every turnover, short stay guests always let you know when something isn't working, etc) but didn't want to hassle with worrying about a percentage of income/management, etc.

I just saw today that I might finally have a second tenant placed (Both to pay $1250) but I’d still like to fire her and hire someone with guarantees around tenant placement and that charges a lower percentage.

Other team members can fill your gaps of experience, lack of credit, etc.Be ok taking a smaller percentage of "something" rather than chasing all of nothing.

A very small percentage do it an easier/softer way.

What percentage of sellers are still contributing in some way, do we have data or knowledge of this?

It ranges in percentage but nothing has felt different.