Paris heliroutes
I presume you have a current 'Itineraires Helicopteres' for Paris 2 & 3( from Pooleys, it does have an english translation for the necessary route heights etc). Ensure that ALL your maps are current and that you have up-to-date printed met info for your route as you run a very real risk of being ramp-checked at Issy. Keep a close watch on the weather as, if it deterorates below Issy's limits at Paris Orly, even if Issy appears 'flyable' - they close the heliport!!!