I know this topic has been done a lot, I did the search and didn't find exactly what I was looking for.

I have decided that it is time for a new plane, and the Edge 540 from Vector Flight seems like the perfect plane.

I plan on doing begining aerobatics with the possibility of moving up to advanced aerobatics with this plane.

What engine will be a good contender? I am looking for the largest possible engine without having to add lead to the tail. I have not recieved the plane yet, but so far I have plans to reinforce the firewall, so that will add some weight to the front.

What engines are you using? How does it work for you?