Six is by no means a large number of showings overall, I mention the above just to provide some suggestions on how to streamline your process in the future.

Streamlined or standard?

For the properties that I manage I use property manage software to streamline communication , tenant requests, etc. 

Does anyone have any VA training material they could share or direct me to that would streamline the process.  

Check out cozy.co for streamlined rent collection.

But now that I know how this whole process works, I definitely plan on streamlining it and making the next one faster.

Do you know if the 203K streamlined will also cover the room additions?

If you get qualified for a 203k Streamlined FHA loan, you should be able to wrap that repair into your loan, get that repaired before move-in (without needing a general contractor and lengthy repair documentation like normal 203k loans) and there shouldnt be much hassle in getting that repair included if you have it professionally inspected and confirmed.

Should I consolidate assets into a different real estate investment to streamline incoming revenue?  

Look into streamlined I heard its a bit better.