A lot of buyer's agents will simply try to avoid showing a FSBO because FSBO sellers are notoriously unreasonable and difficult to work with.

Just from what I have seen already I can assure you, it is not unreasonable to ask for detailed receipt. 

Now, if it ends up being similar to what Oklahoma did, you cannot publicly market the house until you have closed on the house, so there is that hurdle, but nothing that can't be jumped. :)

Having the right financing available might be the least of your hurdles. 

Borrower shall occupy, establish, and use the Property as Borrower’s principal residence within 60 days after the execution of this Security Instrument and shall continue to occupy the Property as Borrower’s principal residence for at least one year after the date of occupancy, unless Lender otherwise agrees in writing, which consent shall not be unreasonably withheld, or unless extenuating circumstances exist which are beyond Borrower’s control.So you have one instrument saying it is Primary and the other saying it is Investment.

So this is a hurdle you'd need to address. 

The attorneys in this case argued that real estate compensation is fixed and unreasonable, yet they charged their clients 30%.

That said, initially it was a bit of a hurdle just navigating from going from fellow tenant/ roomie to LL/ roomie.

Your biggest hurdles are going to be seasoning, and finding a lender who will do a refinance for all of them combined.

One of your next big hurdles will be to NOT get caught in the analysis paralysis trap.