training out of my home..what is the ideal amount of people for small group training?

I agree with others who have said it’s space dependent, although if you plan well, sometimes you can plan around your space. I saw a trainer who had a very small (garage-sized storage unit) training floor but worked very efficiently with 4 clients in circuit (one station was a ladder drill outside in the parking area in front of his “gym”)

My ideal is 4 people of the same fitness level and motivation level.

My reality is 2-7 people of varying fitness levels.