Thinking about it now, buying more rental houses will increase my monthly income but could seriously strain my current reserves if something goes wrong. 

They look nice, but are the original single pane window. 

Oak flooring throughout with a generous dose of leaded glass and stained glass, everything single pane.

I found two broken window panes but all the windows operate and the storm windows and screens are in place. 

Now, I few things you guys might need to know.1- The agent and my colleague have known each other before I joined the business.2- I believe my colleague does not want to upset him in fear of straining the relationship. 

Yes, they're old and single pane, but they're a huge selling point, if the weights are rehung (if they've broken).

About 8 of the panes on different windows have some "fog" in them.

After ten years (max) those new windows aren't going to insulate any better than a single pane, and once the seal is gone it will accumulate crap. 

Show them where the circuit panel is and how to check if there's a tripped breaker (and how to reset it)8.) 

This leads to you going around buying things like furniture and decor further putting a strain on your budget.