A good rule of thumb posed to me by a well-respected investor & property manager is:Less than 100 units – Self-ManageMore than 100 units – Property ManagerThere are certainly anomalies on both ends of the spectrum, but I've found that to be a sound template.  

I recently purchased a small mobile home park (16 mobile homes, owned by their respective occupants, plus 2 single family homes on the property which i rent out).  

To add to all of this, they never do correct their mistakes and simply say the owner (you) is too picky, and we are indeed, given we respect industry standards.

Both have higher dividend yields (9.2% and 18%, respectively) and arguably better underlying assets.  

Let them know you haven't brought any team members on board and would like to consider them for the respective roles in exchange for the assist. 

Everything else is spelled out clearly w/ respect to timelines.

If you do connect with an experienced investor, be respectful of their time, they might be there to specifically talk to someone or they will want to network with other folks, don't overstay your welcome but if they let you, feel free to listen in on the conversations between the experienced investors.  

Are the current tenants good people who follow the terms of the rental agreement, keep good care of their places and are respectful?

Etc...Even two similar lots on the same street could be very different in these respects...

Separately from this - I have a job that pays me a very respectible salary and I have saved up approximately $125k and I would like to increase my exposure to REI.