Looking for guidance on where to find data for projecting revenue.

But then that leaves no money to do a BRRRR - so if you were looking at a BRRRR - you would likely need to lower the price of the house and find one that didn't need much fixing - which is probably a good idea for a beginner BRRRR experience.  

I will Also do take into account the fact the refund window is impossibly short at 3 days for anyone not 75 or older, how you can decide if you are satisfied with a lender inside of 3 days for finding a deal, and doing the appraisal etc is beyond meYes, they are a scam as I tried using them and besides getting locked out of my account constantly, which seems to be from their side of things from how they made it sound, they have rather unrealistic requirement's (Comps that none of the local realtors or other lenders use for one thing i.e too narrow),or the fact they expect total rehabs to be done inside of a month or 2 and then the property should sell instantly after that, they want all of that done in the space of 5 months, even deciding a property is something else entirely, deciding that other homes are businesses (Like a bike shop) even though they are clearly residential SFR or apartments.

By chance have you checked out the BiggerPockets property management finding tool on the website?

I would try to find opportunities to bring to them that you could partner on with those investors.

I'm finding this all very nerve-wracking a newbie.

You can find a lender who specializes in All in One and finance with them.

You most definitely can go in on a Fourplex with 3.5% down, primary residence, living in one of the units, find out what purchase power you have, and what the rent rolls for the other units will be to determine your cash flow. 

Airbnb How did you find this deal and how did you negotiate it?

Find out if you're required by the local code to have a medicine cabinet before you take it out.