The list above are items that have floated in my head, but I don't think all are necessary.

A lot of misconceptions are floating around out there and are being repeated. i always joke with my clients (but serious), "be careful who you listen to for tax advice". 

But another option would be to approach the seller with a contract with a floating closing date giving you time to get your property sold. 

A couple of the principles that i found to be amazing is Triggers: how does it apply to their life, so that as they are floating threw it, they have triggers that remind our message to them.

I would use the resources like yellowpages, google reviews, ask at a real estate investor meeting or maybe sign up for Angie's list and find the best HVAC company and installer who, stands behind the product, is willing to educate you on the right equipment and provide you a fair quote.Your investment strategy, and what the standard is in your area will dictate the price.I would look for the Highest seer, with a good warranty 10 compressor, 10 year parts, look for one with quiet technology (compressor sound blanket, motor mounts, Air handler blower motor, air flow designed for quietness) and ease of service for the air filter, air handler coil cleaning, overflow float switch, and access or instruction on drip pan tablets/liquid and drain line cleaning.What I look for in a HVAC installer is someone who is proficient and not on the phone or looking through the manual a lot.  

GET MY DRIFT!  

This is what I did to remove the smell:-Ripped out floating hardwood on first floor, there was a plywood subfloor.

and the market is not likely to just float up in a few months either.with all of that said, you can absolutely do a live in BRRRR like @Jaron Walling mentioned.but you really have to boost the ARV or it's just not worth it. 

Instead of a floating bar, you can float over and change your motor oil and air filter.

Pandemic years also saw a ton of money floating around.