Dear Josue,
You asked about Macs--I use one as my primary computer with AC in the Cloud. Works great using Remote Desktop Connection.
In our office with one doctor we have 5 connections. We could get by on less but for optimal productivity for us 5 is best. I use two computers so that I can multitask and even if i have a problem with one, the other will work. My medical assistant has one and we have two in the front office--one primarily for billing (ACPM--at least when that's working) and the other for our receptionist.
John