They probably want to be certain YOU are legit.Most of the scams I've seen are by non-owners. 

If a mortgage has a deed restriction, not allowing short-term rentals that is not imposed by an hoa or a city government how hard is it to get it removed?

Another option is to put an electronic deadbolt on the front door with a non-locking door knob.

Head over to bank rate or and take a look at the mortgage calculators, plug in the numbers and get an idea of what the property needs to generate to satisfy the intended debt.You still have to underwrite the deal for the non-finance expenses as well(typically 40-50% of the gross rents). 

Your park name has now landed on someone's government desk and you will eventually be forced to answer a lot of uncomfortable questions. 

With current interest rates, and they are at least 1% higher with potentially additional points for non owner occupied property, it is hard to find properties that will allow for positive cash flow after paying the mortgage, if you are looking for money for the down payment from a private lender, those are normally at higher than market and I am not sure it would be possible to pay it off.... please remember you need to take into account that you may not have a tenant for a certain amount of time, a tenant may stop paying rent, or you will have a big ticket item to fix, so I would wait if I were you and save to have enough for the down payment and closing costs and perhaps some money set aside for repairs. you also want to make sure that you have your own emergency fund outside of the money needed for the investment property because life happens ....

Publication 336 (cash method section) gives a clear example very similar to the situation described where constructive receipt was made because the agent of the taxpayer received payment for the taxpayer. 

And of course, these would be hard to answer in a public forum.  

But now with the joy and headaches of non-metered units, trying to wrangle 3 different set's of persons into playing nice, etc etc.. 

Problem is it doesn’t exist as a “public” offering.