Fuel figures are right, about step climb and speeds:
Full load and ISA you can climb up to FL400-410. If ISA is +10 FL390 itīs top, you will struggle to stay up and burn lotīs of fuel above. Start your step climb at 21.000lbs. Speed 0.76 itīs ok, temperature changes on the Lear change speed rapidly. Above .78 full load you will feel that sound wave approaching on the wings, itīs very disturbing for pax. End of the trip you can do .80.
Donīt trust remaining fuel on the FMS, it calculates fuel and time on actual wind. Once on a 1.700nm trip we had to do an alternate fuel stop, headwind 140-160 all the way, also another time we had to fly FL300 all the way due to heavy turbulence above for 3.5 hours, another non-schedule fuel stop. Of course neither of this was reported on the wind charts or flight plan.