China makes 80% of all air conditioners in the world.  

Although you may eventually get that type of air bnb money, it will probably take you 2+ years.

BUT, 1) give it 3 days to acclimate inside your warm rental 2) be sure to OPEN the box so air can get to the planks while they are acclimating3) if you encounter not-so-stick splices, add adhesive.

I have one friend who has one and is using air b n b to turn a profit on them, since they typically rent for less than the costs of ownership.

Yes, we have 3 air force bases, 1 army base, and hundreds of contractors everywhere.

I agree it's tough to find deals in open air.

You tube it and replace ur self.Or get a new plumberYou should be able to replace a heating element your self.

Can I remove the mold portions, wipe the remaining with bleach and seal with Kilz Sealer; then wait a few days and get the air tested before patching the drywall back up?

Upon initial inspection it looks like the electrical is a mix between knob and tube and Romex (looks like it was somewhat redone in the 60s)1) we currently have 10k aside for rewiring electrical, is that reasonable?

Back in 2014, I purchased a multifamily that was flip for 317K, I put in 40k into the house (finish basement, central air and heating.