IF you are going to fly an MU2, I would think you should have at least 2000 hours , an ATPMEL.
You should sweat each and every takeoff and be right on speeds for landing ( I was flying out of a 2500 foot strip with obstacles and I computed the landing speeds and takeoff speeds for each flight).
You should treat it like a transport plane and not a light plane. RIGHT ON speeds and be ready for anything.
Dear original poster, if you are not an ATPMEL, just forget it.
IF you are just looking for a plane to fly from a grass strip and good IFR machine maybe a maule lunar rocket might work.