Everything hea sounds right on the money. If you can find a plane that still has the tail tank. The airplane gets better range and flys better with the further aft CG. The westwind II with tail tank should make it from TEB to VNY or SBA - PHOG in the summer. I emphasize the should. For the price nothing will beat it. It should be less the 1.8 for a nice Westwind II and less then 1.2 for a I. It is a runway hog but it makes up for it in range 4500 ft at sea level or better to keep you safe.
Good Luck