beside that: 6A shield, 5A scb for non combat, 6A for combat, A class thrusters (!!! - the python turns like a brick below that), don't make it to heavy, pointdefence, one medium, one large turrett at least.
Then really it's all about shedding weight, wherever you can.
Try the D grades but other equipment is important too. Guns, shields, weapons, everything .. dropping weight will give a better range on existing powerplant/distributor/FSD modules.
Jump Range of loadout is showing at the bottom of the outfitting screen now (obviously swapping for any module that inceases jump range, that improvement shows in blue).
Best jump range with what though? Long range haulage Sothis or similar? Combat? Mining? Exploration?
My trading Python is entirely D rated except FSD and carries a few mine launchers, Bi-weaves and a big A rated scoop....On interdiction it is designed to run.