Yes depending on the current state of the bird it's an ok first flight in an aerobatic airplane.
3G's isnt too much, and most people can handle that pretty easy, so dont worry about that and any pilot giving a ride will judge your current state as no one wants ook all over the bird.
When i did quite a bit of aerobatics rarely was in a certified airplane almost always in an experimental airplane. But i did fly quite a few times in some Pitts and also Edge540's over the years.
But when you get into high end aerobatic airplanes they are mostly all experimental, and this is a good thing as not too many factory airplanes can handle unlimited aerobatics for very long.
Once you get into aerobatics there is no unusual attitudes in aviation anymore, just usual ones, and the occasional bad attitudes, but that is a different subject