The quickest and safest might be for you to move all the stuff into storage, pay the first month, give the son the key. 

I currently have a SFR that I house hack and can easily throw in another few hundred a month extra towards the principal.How fast would this accelerate the amortization and are there any benefits to it?

That's why, as unfair as it is, many landlords offer cash for keys.

I am posting the numbers in order to (1) share the information for the benefit of others and (2) get people's comments on the deal.The property we're selling closes tomorrow and we will receive about $420k, which is enough for a roughly 25% down payment on this new property.

A couple of questions: Should I just pay or is there some benefit to requesting abatement? 

STAY POSITIVE AND STAY PATIENT is the major key in what he said.

The benefit is that you can choose pretty much anything to invest in as long as you follow the IRS rules. 

5) Crime statistics6) Median Income7) Percentage of Renters vs OwnersAre there any other key metrics that BP is looking at when identifying markets to invest in? 

I’m working the creative real estate strategies and I am looking to connect with active wholesalers for collaboration with mutual benefit.

Just wait till you get the keys, too many things can come up between now and then.