You'll likely need a higher down payment if you can find anyone willing to finance something like this as a first time investor; many require some level of rehab experience at the very least.

Repayment options can be more flexible like in my case I do everything on accrual this really helps flippers when they dont have to make monthly payments.

Your son is responsible for making payments on time or ruining this seller's credit. 

Don't change jobs or income yet.Once you do and you think you can manage the payments based on your new income, maybe once you get the rooms rented.Then if you want to switch there are plenty of opportunities. 

Start by serving proper notice of the management change and request payment details.

Same goes with Trustor or Mortgagor payments.  

Find a down payment assistance program and see what that looks like. 

I forget; it was payment processing related) that required me to have a website for the business.

Which do you think a tenant will pay first - their car or rent payment?

Some companies call this a markup for managing the payment of utility bills.