If you need to, pledge the existing property, wait for a better price, then sell. 

I had my roofer inspect the joists to make sure it was solid when the roof was changed, infact it was them whom suggested I use the existing framing to save some bucks.

Therefore, there really is no way of me knowing if these repairs are actually happening or even if these repairs/work orders actually exist!

For the short(er) run, you can remove the tile and lay heavy plywood (3/4" or 1") on top of the existing sub floor - and shim to level.

A judge may decide that they are entitled to some discount of rent for the time that the violations existed but we are talking about a month or so at the most and it sounds like the violations are minor so they have a weak case. 

Its tough to fix bad habits of existing tenants.

There are a lot of investors around for sure, just in the past two months two houses on my street have been bought and flipped without even making it to the market.Jeremiah,I have noticed that multi-families just don't exist in some of the nicer parts of town...

If you already have forced air heat just do what you've been doing and use the existing duct work.

That is why I think I will choose just to buy existing hotels.

This is why buyer's agents exist.