Questions re Aerobatic Lower Limit

[the wizard of auz]

I did my low level stuff in the R2160. wasn't a too bad machine, but suffered the same lack of power most entry level aero capable stuff does. moved into the Pitts and received a pretty big eye opening.
I prefer to get a bit higher nowadays for aero's, as I enjoy the view from up there far more than down low, where I work all day.

[Buck Rogers]

On my low level aerobatics instrument waiver it states Aerobatics at a height no lower than 500ft above ground level ...Passengers shall not be carried during manoeuvres below 1500ft.