How the rental pool?

Currently I'm thinking of pooling resources of several landlords in my area to try and patrol properties.I'm looking for pros and cons.

Selling several and buying several is the deep end of the 1031 pool. 

The property already has a pool in the back with no room on the sides or back to add even a small guest house.

There’s a massive pool of renters looking for amazing rentals.

Why decrease your buyers pool but such a large margin rather than putting in more effort to find another deal without a major obstacle!!!

I am sort of semi retired now, but still involved in designing residential projects and in fact in the middle of my own residential development, a small one not more than 10 units, one, a mansion with a swimming pool and private tennis court and the other 9 units to be 3 bedroom 2 bath units stacked on top of each other using shipping containers. 

I closed this past February and live in the property.HOA is $267 and includes the usual, water, outside maintenance, pool, tennis court, basketball court, snow removal , and storage.My current total payment is $1925, including taxes, HOA, and $199 for PMI.My question is, should I pay down my mortgage to reach the 80% LTV so I can remove my PMI and pay down my mortgage? 

My subdivision has no pool, no neighborhood watch, there is really nothing or any reason for the HOA. 

When I raised money for flips I did it with blind pool funds so it wasn't short term for the investor, and the assets weren't known ahead of time.