Additionally, are the window single pane, double pane, or triple pane?

Investments are supposed to complement your income and life not be a strain on it. 

If the panel is not metered to each unit, find out what needs to be done to be able to turn the responsibility for paying utilities over to your tenants. 

. - the doors to the deck I plan to use full glass pane doors for more spacious feel and light and modern look.

A free and clear primary residence in your retirement years won't strain your income in retirement should you decide to stay in your current home.  

I have redone the landscaping, trimmed trees and bushes, upgraded the swamp coolers to HVAC dual-pack units, upgraded single pane aluminum windows to dual pane, and removed carpet in place of laminate flooring. 

"Even though the economy in [Dallas] has boomed, home prices have grown much faster than wages, and buyers have been straining to afford homes," reported the Journal.

I’m from the school of thought people make a bigger deal about it than it is .id be more worried about being sure any connections are made inside boxes wIth wire nuts and the panel is modern with newer breakers and not fuses .

@Devin Rock will the thousands of dollars per month spent in marketing put a strain on your finances?

There are various types of mold strains as well.The musty smell could also be an air circulation or tightness problem with the space.