I already have access to MLS via a realtor,  I frequent the HUD, homepath, and VA webpages Daily,  I browse Craig's list every so often.  

More frequent site visits can also pay off; get them on a maintenance inspection schedule and address energy wasters as you see them.

All of which are frequented by Millennials and young professionals. 

I frequently here that the plans you get online though don't have enough information to actually get a permit from cities (that probably depends on what your jurisdiciton requires)  In my area most people opt to go with a drafter.  

However, Springs does make for a fantastic rental market as we have a strong military presence that frequently would prefer to rent over own to avoid the situation you were previously in.

As far as the lender, many loan officers don't want to deal with investor loans or have much higher rates and fees than lenders who deal with them frequently, so it wouldn't hurt to research investor-friendly ones, especially those that work with up to 10 properties versus just 4 so you can start establishing a long-term relationship with the right people.  

How frequently did you go out to the property supervise / check- in on things?

If you have to cut it then you would probably need a basic glue up shower surround which don't always last that long, require frequent caulking, and in my opinion don't look all that great. 

I have an associate who is not a frequent BP poster but I met him and his wife on BP and have met him in their hometown and had lunch with them..

And most people don't even know it, even though it is publicized pretty frequently.