According to this article, these guys were just hit with a $15M judgement for "employing deceptive tactics to sell expensive real estate investment training programs"https://www.cachevalleydaily.c...

So maybe a negotiation tactic that is in your arsenal if situations like your point three occur.Thanks for the inputs...

Ive been trying to solve any financial problem they have with my partners cash.Do you have any tips or tactics for seller financing deals?

What advice would you give to those who are looking for their first facility and are utilizing these marketing tactics?

The tactic you just described is a version of house hacking and can be done even without the refi!

The items you mention are mitigation tactics, they cannot eliminate the risk associated of someone carrying the disease from coming into your property. 

I am calculating my asking price by taking:ARV-(Rehab+PurchaseCosts+SellingCosts+HoldingCosts+Profit) = MaxOffer.Am I just being impatient, or should I change tactics?

If an agent, it's their job to advise you on strategy and tactics. 

There's another tactic of "wholesaling" the lease option back to the seller.  

There are all sorts of nasty tactics that are used to make a listing unviewable - the one mentioned in the OP, the removal of the key from the lockbox, changing the lockbox combination, etc.