Yes, considered both of those weapons. Rails are appealing, but they pull more power and to mount them I'd need to either make the 2A PP hotter with another level of overcharge or go back to 3A which kills my speed. Plus there are no gimballed rails right? Cannon might be a good option, but I've just spent my lightweight mats again
I spent some more time on this ship today and it's come a long way. I still lack the mats to get everything done. But it now sports decent integrity, shield strength and resistances while keeping above the 600/800 speed thresholds I am gunning for.
It has the G5 lightweight frag cannon now. I flew it in combat and it handles just like I want it to. It's amazingly fast and agile. I have corrosive and incendiary on the two multis, and oversized on the frag. I was killing ships, but I don't like it's one v one ability. If I use it's high speed, it's hard to do much damage. If I turn it in to a knife fight, the shields won't stand up too long. The frags have to be fired in tight like Wingy just mentioned so if using the high speed it's just snapshots, not sitting there pounding the target with repeated volleys. And that high speed carries you away to turn around and come back, giving the target a little time to recharge, slowing it all down.
However, in any RES other than haz or in a CZ it's going to be really good. Insane acceleration and high end means I can be gone in a blink, or close the target at will and dictate terms. Having allied NPCs means slashing attacks are viable. Don't have to kill it all by myself, which is when this build seems weak.
I still have to sort/finish the boosters, ran out of mats. And the PD is just G3. Resistances are much better and more balanced than before I re-did the shields from Reinforced to Thermal Resist. Resistances will be around 60% when the boosters are done. Not sure that's the best I can get.
I still have an unused C3 optional (HRP, MRP, Guardian module?), and an unused utility (chaff? another booster?). I need to shed mass to add mass at this point.
Here's the build at this stage. Just awesome to fly in Elite. Fantastic cockpit, great view, insane speed and excellent agility. In the Frontier forum thread, most players that replied with builds had opted to make their ship as fast as it could be, around or at the 861 limit. But that meant sacrifices elsewhere, either in integrity, shields, jump range or lack of a scoop. My Courier trades some of that speed to get 34 jump while having pretty good shields and integrity and still having a scoop. Velocity Late Build