My 73 LY build has reasonable shields and some offensive capability for the occasional bit of PvE combat. I think the easiest way to get more range is to lightweight engineer everything that can be lightweighted and focus on using power efficient modules and power priorities so that you can drop down the size of the powerplant. I found this guide on the forums (I think I used another one), but it seems fairly detailed at a glance:

You need to grab the blueprints and then go to a Guardian Technology Trader to unlock them (they can be found spread around in the bubble, but I recommend LHS 20, Ohm City since it also provides a 15% discount on the modules as well as super cheap power plants). I don't feel like it was too much of a grind, but the Guardian FSD boosters are hugely beneficial to jump range as they add a flat bonus that is unaffected by weight.

Unfortunately trading G5 to G5 materials is pretty terrible, but overall the system is a big improvement over what was there before. If you remember the difficulties in getting G3 Cracked Industrial Firmware, well you can now trade the G5 Modified Embedded Firmware for G3 Cracked Industrial Firmware with each G5 MEF giving 9 CIF's in exchange. Material traders have also made the grind a lot better since you can trade higher level materials for lower level materials. Legacy G5 modules however when upgraded to the new systems format lose a level and start at the end of the last level (ie if your 6A FSD is G5, when you reroll it in the new system it first downgrades it to G4 and then rolls the upgrade). The reason I bring this up is that the G5 FSD upgrades using the new system are better than any other upgrade possible in the older system, so I would recommend upgrading your 6A FSD. They have changed the engineering system to be a lot more friendly, so that every roll gives you an upgrade as opposed to the older system (I remember rolling 200 G5 FSD upgrades and not getting an upgrade).

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