It's good to really know what you plan to do, because you can spend considerable time, money, and effort adding capability you might never use.
Paul
I plan on doing very basic acro in my -8, but don't plan on hanging from the harness. I'm doing standard fuel pickups in both tanks and no inverted oil. If I hang a little too long, maybe there will be a small stumble, but that will be part of the fun, energy management.
And the big fun is cleaning the oil off the belly.
And the big fun is cleaning the oil off the belly.