Right, but getting weight down further below optimal mass doesn't make a difference to shields, just so long as it's below? Nice shield values. I'm looking at a measly 112 MJ, and that's having to downsize the powerplant to scrape in under the weight (if fully laden).
OK pretty happy with this general purpose cobra build now (subject to thinking about that scanner still.. it's an extra 50% insurance cost):
http://coriolis.io/outfit/cobra_mk_i...Bj5AmbIZnAjMUQ
3A powerplant (want efficiency for fuel scooping/escaping jumps too close to suns)
4C thrusters (want manoeuvrability)
4C FSD (want OK jump range)
3D life support
3C power distributor (want OK power to shields/weapons)
3D sensors
4D shield gen
2C fuel scoop
1C adv discovery scanner (may drop to intermediate)
4+4+2 cargo packs = 36T - if I enjoy exploring more I might switch to an AFM and go down to 32T
2x class 2 gimballed multi-cannon
2x class 1 gimballed pulse laser
0C shield booster
0I chaff launcher
Perhaps a little weapon heavy?
PS I really hope I did make the 70% CG. Be a bit of a blow to be dreaming up nice spec's I can't afford