I would say finish the FSD engineering to G5, then select an experimental feature which you can only do at the engineer's base. On any FSD I want maxed for range, I add the Mass Managed experimental. You can go on coriolis and see how MM increases your jump range (its definitely worth finishing the G5 FSD). fwiw, I've had to leave Deciat before and go find more mats then go back to finish up the engineering rollsOkay, I've basically got the FSD up to G5 now, after some faff
I see that there's still a level up ring to complete for Felicity Farseer on G5 for her FSD...does it matter if I don't have this ring completed (it has optimised mass in blue...it doesn't seem to increase, but perhaps it does depending on how close I am to completing the ring)
So I guess what I'm asking is should I try to complete the G5 ring by keeping engineering an FSD G5, or does it not make any difference?