I would have an emergency fund/retained earnings build up to cover these costs along the way.

Unless you really know what you are doing, you need to retain the services of a professional Qualified Intermediary to keep you out of trouble.  

We then triage the resulting list into those tenants we wish to retain, those whose tenancies are neutral, and those who appear to be problematic.  

Is there any way that you could try a BRRR and retain your day job?

I would retain counsel and file a declaratory judgment action seeking first to rescind the contact or alternatively to set the purchase price at $740k.

You need to get an ATR "authorization to release" letter signed by the seller where you are allowed to negotiate the lien on behalf of the seller.The lien holder might release the lien for a nominal amount. 37,000 for 3,700 BUT they will retain the right to pursue the borrower for the balance in the future.They will not release the whole lien amount for that and let the borrower off scott free unless they are not an astute lien holder.You need to find out WHAT amount the lien holder will settle for to release interest and then go back to the buyer and see if they will up the purchase price some with an amendment to purchase agreement.No legal advice.

If you're looking for a place to retain complete control of your IP, that place is your own website.

The 101 markets on the April IMI represent a net gain of two from March, with 13 metros being added and 11 markets slipping from the list while 88 markets retained their places on it.

I generally view it as nothing more than an amenity that can help attract and retain tenants.

@David Olson - in terms of tenant acquisition I have seen no problems with attracting/retaining tenants in my experience.