IIRC there is a "gravel kit" for the II. (nose wheel spinup via bleed air I think and a mudgard)
However, with 8 Pax with bags in warm conditions out of 3450ft....1100 nm plus 300 nm ALTN a II is most likely not the kite you need.
Last edited by His dudeness; 7th May 2013 at 18:40.