Primarily real-eatate brokers have subscriptions to MLS (who guard their data so tightly, they do not even make much of it available via their website as their U.S.A. counterpart does).  

I subscribe to multiple real estate investing blogs, have a subscription to Mashvisor and RealtyTrac, and can't seem to make a decision about strategy or area.

@John Cashway I agree regarding RocketLawyer, they appear well tuned to NJ, I didn’t use them for lease agreements, though they impressed me with other services.It is a monthly subscription, but if you need a single form only, can start a trial and have the form for free.

Lastly, consider an Adobe subscription.

@Robert Shoffner  You can look at AirDNA to get a rough estimate (without a subscription). 

CREZMA.com is a paid subscription for access to local "off-market" properties.

What are some great platforms (free or paid/subscription) that I could use to uniformly create social media content?

The best and most reliable are paid subscriptions: Black Knight, Data Tree etc.

If I remember right they’ll draft a letter to him for me and advise me on how to start the small claims process as part of my subscription.

I didn't have cable (or even a TV) and had no subscriptions to anything.