Depends on the aircraft weight. A manual comes in at about 4500kg and an auto pilot comes in at 4750kg.
The fuel burn looks a little low to be honest for 600NM unless your doing long range cruise. I hope you have a toilet fitted
What is your alternate fuel ? Hold is 180kg, 30kg for taxi.
Taking a 1000kg of fuel. On a manual which will give you 120kg for Alt fuel (about 30mins radius div fuel)
About 12 males 13 tops. In the winter at below ISA but it will drop off above ISA. But 5-10knots of head wind will easily get you back up to MTOW of 7059kg. But I wouldn't contract for above 10 pax if you get a head wind or its hot your going to struggle with 12.
Also check your drift downs J31 is a bit ****e for that at high weights. Havent got the book here but as soon as the MSA gets above 5000 you have problems.
Good news is that ESAS or whatever you call it. Is making all manufactor's put all their data on the web. So no more of this nonsense of refusing to publish MMEL's and performance data online.