It makes my time more efficient and creates a bit of competition as some of the tenants show up a little early or want to stay a little bit late and they see each other.  

I have 3 efficiency units and wish I had 30.

Does anyone know of good contractors that work, fast, efficiently, and are reasonable with prices?

But you are differently right, having a reliable team that will work efficiently and get the job done is key.

It is more efficient to have a few open at the same time if they have the same applicant pool, but even if you try to get them the same, they are going to start to naturally stagger as people leave before the lease is up. 

In my professional life, I have always been the guy tasked with making processes more efficient, and was regularly moved into new jobs to help make that area of the business more optimized. 

Along the way I’ve learned a thing or 3 in how to efficiently set homes apart from the norm.

The main building has 5 efficiency apartments. 

However, I will say that most successful investors I've read about and talked with, will only invest in areas they are familiar with, or have very efficient systems in place to overcome the distance. 

Mandated home efficiency and safety requirements are added to code all the time