The best feature of the membership is that once I start a project, PIN is right there with me in constant contact and communication, willing to get involved if the situation requires it.

So the idea is to constantly learn to get better and better where people seek you out by reputation and it's not about the commission but the ongoing working relationship.Sometimes if a seller wants excessive marketing one strategy is too have the seller pay for the upfront marketing and if it sells the broker/agents gives back the marketing cost amount at closing (verified credible receipts of course).

There's constant construction of new taller buildings in place of older shorter ones, most of which is apartments.

Real estate investing is all about failing constantly but doing the volume of offers/etc to find the deals.

But is always constantly in flux.

I was looking on my realtors website and Zillow mostly, but I was checking constantly.

And real estate deals fall apart constantly.

Depending on where this is, you may be in an area that will be hard to attract decent renters and you may be dealing with constant damage and eviction.You really should run the numbers, and also think about the tenant base and if you want to deal with that tenant base. 

Constant communication and notifications when there are vacancies?

If they allow, the situation changes and you have to constantly verify.