1- It's customary to have a "landlord policy"...I use Allstate and after group discounts it's only $46/mo with state minimum coverage...property is valued at $145k.

She also knew the apartment was being shown since the agent from Renters Warehouse was notifying her of showings.  4 days before the move out date, I had a city inspection and when I went into the property, it didn't appear that any packing or moving had been started even though she stated that she already had a few days prior over the phone.

You do get tax advantages by putting it into the 401k to then purchase, but you will kill your personal cash flow from the property by using a 5 year amortized loan from your 401k to buy it.With you wanting to be FI prior to the 401k distribution age, there really isn't a reason to chuck it into the retirement vehicle first.

In March 2018 I completed a three year battle with the City of Wheaton (this use to be a 4-flat with code violations from prior owners). 

Cover all your bases up front with policies on overnight guests (what is an occasional guest vs a rogue tenant), illegal activities (can you evict over underage drinking, marijuana-what evidence is needed?).

Even if it's worth $250K :)If you can be patient and turn that property into a rental for a year then you could sell it and take $250K of gain tax free since you've lived in it for 2 out of the 5 years prior to sale. 

He did provide a message with an insert that says if interest is transferred or sold without lenders prior consent that they would give us 15 days to pay the loan in full.

Get a forced place insurance policy if your contract allows.

No title insurance company will write a policy.

A nonresident, who receives deferred compensationor income from the exercise of stock options that wereearned in Georgia in a prior year is required to pay tax onthe income, but only if the prior year’s income exceedsthe lesser of: 1) 5 percent of the income received bythe person in all places during the current taxableyear; or 2) $5,000.