Or better yet, what are some creative ways you network/market in the already popular social sites?

I recommend form a relationship with an landlord tenant attorney, sign a retainer, and then have on demand opportunity to ask 10-15 minute questions as they arise throughout the year. 

The fact that you are out of state and the tenants are elderly is only going to compound the problems when they arise.

Cost-wise, it will be more expensive than social media, but it generally is not cost-prohibitive.Blogs and Real Estate WebsitesBlogging has become a popular way to build an audience on a particular topic.

I am seeing black trim and cream walls rising in popularity...gray walls are dreary.

Then if your buying from a wholesaler, which is becoming increasingly popular especially for less established investors, your going to pay about 3% in closing costs.

Became a popular STR property that has continued to stay booked since going live.

Right now Somerton is popular neighborhood for the immigrants from the former ussr to settle, but you have to remember late 90s early 2000s when the previous wave of them moved out from northeast to Bucks and Montgomery counties.

Im getting picky this year though, either 3+ bedroom SFR ranches or multi family (2 or more units) im currently waiting to close an auction property (duplex) I won for $13,699, I will spend $20-25K in rehab, it will generate $1100-$1200/mo gross and should get  an appraisal at $80-85K. they are out there you just need to be in the deal flow and act when the deal arises. 

You will probably also want to have a formal written agreement with your partner covering several situations that could arise such as if one party wants out, one wants to transfer their interest, one wants to encumber the property, one wants to improve the property, etc.