A ZDZ-80 with a Krumscheid tuned can and header easily hovers a 29 lb plane, actually has plenty of excess power to pull out of hover. I would guess that it also would hover a 34 lb plane. Without the pipe, it probably would not have enough power for your plane. I don't know if the Brison or Sachs 5.8 is as strong. The ZDZ likely will cost you less than the Brison and they are available.