It’s a good time to inspect the service entry cables too, if the panel is that old, they may need to be replaced too for an additional $500-1000.

We require forfeit of deposit, 30 day notice and buy out fee of 1 additional month of rent. 

If it doesn't, add it.

The last few years I've been seeing great results with simply index investing (which I'm still continuing in multiple IRA accounts) so I guess part of the motivation for real estate was to diversify a little bit  (in addition to the REIT holding I have). 

Setting up multiple LLCs can provide you with more protection, simply by adding additional layers that make it harder for someone to get to you, if they sue you.However, it is probably totally unnecessary and, in my opinion, borderline unethical, for an attorney to try and sell you that level of protection when all you are doing is buying a rental property.

Had you chosen to not pay your August rent, I would have been legally allowed to keep $500 of your security deposit (lease agreement) to pay for the early termination fee incurred with the early termination.Because the lease agreement has been terminated, I am not legally obligated to return any funds to you.

Did you get any additional security to guarantee repayment? 

In addition if your going to flip houses you need a developers license..  

If you believe you will need additional time to complete the request ask for it stating that you just became aware of the requirement to provide the documents on such and such a date as the agent never informed you previously. 

In addition, you can send out marketing campaigns to your target market.