If so should it be done as 2 LLCs for the best tax benefits for the two of us? 

So you don't really need a realtor to write the offers for you although im not sure the benefits of doing that since you don't pay any commission as a buyer.There are multiple ways to get access to the mls.

I would search by going to Trusted Choice and searching for an agent by the zip code of the property.

The benefit to this was—I was able to purchase cheaply, and put more money towards some interesting renovations that boosted the home value, and made for some awesome perks for my future tenants. 

Anyone know is there is link/video/tutorial/webinar etc that can walk me through the PRO benefit and how to access and use the benefits.

He is the one that benefits from not using a realtor, not you. 

In that respect, stripping out the previous experience, what new things did you learn from this project that might benefit others, such as myself with the 'newbie' perspective?

I also know very little about the tax benefits, or lack of with each option.

Another benefit is getting a list of cash buyers in the area in order to build your buyers.

I could add a new separate switch outlet which would meet code but is less than ideal.