I have had both but not together as a combo...
I personally think the Jett would be wasted on this application- Don't get me wrong it would haul *****, but that plane is designed for basic pattern- and would probably disintegrate with the Jett on it-
Mine flew very well with a TT Pro-46 and an Irvine-53- a YS-63 or Saito 72 would be great as 4 strokes go...
Good luck! Great fliers those US-40's!