The PMC I left to start my own PMC had at least 2 "preferred contractors" related to key players in the office so high rates and poor service fell on deaf ears. 

Highly reccomend joining local investor Facebook groups.

I don't have much experience with other platforms but I can assure you RentRedi sets the bar pretty high. 

You have to have exit values of single family homes high enough where build cost can work.

Since Airbnb remits at the state level when I see high numbers (or low) of what I am remitting for other OTAs/direct I then drill down to make sure listings are optimized on all channels.

Rate will be highly dependent on loan size, credit score, LTV, location, and property type, as well as a few other factors.

I was going to buy a owner occupied duplex with 3.5% down then buy an investment property using 25% down but my DTI ratio would not qualify for both mortgages in the same year unless I used a dscr loan but then the interest rate would be very high, and it'd be hard to make a deal work using a dscr loan because of that.

You are going to be great through the highs of the next few years after this year.

I think my fees are high until I shop around and then I am thankful. 

There are two types of return from a rental propertyCash Flow & Appreciation.I normally also aim for a minimum of 8% return between Cash-Flow and Appreciation.Appreication, nationally, is around 2% to 3% annually.Therefore, your goal is to get the cash-flow to be about 5% to 6%.The issue is interest rates being very high, you would therefore, need to buy at a pricepoint where the numbers still make sense.You can always put down more of a downpayment to cash flow, but that will impact your cash on cash return calculations.Best of luck!