This spring I moved for a new job (currently renting myself) but hung onto the house to rent out. 

I am currently in the homebuying process, looking to close on the house in the next few months and house hack it.

You should talk to the Landlord of the current home if they don't own it.

This would then net the seller the most (320k market value) and give her the passive income/deferred gains as well as giving me a low interest loan to work with. 

There is certainly an uptick in scrutiny against fraud and with valuations for refinances (esp. cash-out) in the current environment

Only have about 6 units in my portfolio. 4 currently rented and 2 almost ready to rent.

A mentor can accelerate your growth, no matter what level you're currently at.

It will be a really low offer compared to what he is looking for.Another option is to price it the way the seller is telling you, with contingencies giving you the chance to back out if the house is not the way it was told to you.

I am currently pursuing a Master's in Real Estate Development and Investments and have an opportunity to study in paris for a few months.During this time, I am to focus on the office market and investment strategies.

Always do your due diligence and buy low.