@Katherine Rossell - Next property, either stipulate it's empty when you close (if you know the current lease is weak, which you should have here) or if you think any of the tenants are trouble in any way.

My strong suspicion is they are taking advantage of the current weak owner and they know they are getting a free ride that they won't get anywhere else, and that the ride has come to an end. 

I should have taken their late rent seriously after the second month they were late... they are definitely taking my kindness for weakness.

If you show weakness and back down to the tenant's threats, they will walk all over you - and it may also be used in court to show you allowed the behavior, so now you can't complain about it.

The current weak link of the company seems to be on the leasing side, with all of these new properties closing or renovations coming to completion we had a ton of leases that now needed to be done for our clients.  

Sometimes your greatest weakness is also your greatest strength!

Just understand what you're doing, why you're doing it and what the tradeoffs are.Here's my philosophy on hiring professionals: I exploit my strengths and hire out my weaknesses.

So, if 'weak" on your lease, don't feel bad about buying a template from one better refined, or using a TP service from a provider who has one to level like mine and then, well, you'll have that in hand for all actions going forward, right. 

have a physical or mental disability that substantially limits one or more major life activities—including, but not limited to, hearing, mobility and visual impairments; chronic alcoholism (but only if it is being addressed through a recovery program); mental illness; mental retardation; being HIV-positive, having AIDS or AIDS-Related Complex

I have worked with many chronically homeless and mentally ill and this is exactly the problem I saw.