However, how long is living with your parents too much of a burden/socially acceptable?

Be prepared to accept a settlement somewhere in the middle of what you think is owed.

Most realtors will accept that since FSBO is pretty rare actually.

Any lenders have a program that would lend the gap with an acceptable downpayment?

Sometimes I'll come across agents who really don't know what they're doing. to me getting a license is like passing the Bar exam  it just gives you the right now to learn how to practice law.. just passing the test in RE in no way prepares you to be a good agent / successful agent thats the next step..

Due to my limited income, this could even remove the option of low down payment just for me to see an acceptable mortgage payment. 

In recently decades municipalities have passed lot minimums that render a huge number of the existing lots unbuildable, so they have had to accept grandfathering in a large number of the older lots.

I am curious on how I should handle the news that they have an accepted offer.

One idea we want to test out is a room setup that can accommodate families who would need two rooms at any other hotel. 

Landlords should accept that we are targets of the political class.