The style of your writeup is very professional, but… I decided to see how fast you wanted these things to go and ‘stunningly mobile’ doesn’t do your Charyb justice, he’s going fast enough to go backwards in time. It’s broken to the point where you run down Snaked Garmurs with T2 afterburners + heat.
Dramiel is 460m/s with 950,000kg and agility mod of x3.1. The Charyb has 522m/s with 748,000kg and agility mod of 2.685, which is faster than the pre-nerf Dramiel, as well as more agile.
We’re talking about speeds for the Charyb along the lines of 1976m/s with a T2 afterburner and a 28m sig. It would align insanely fast ~1.88s before fittings, 3.14s with T2 AB active. Let’s move on to the overheat bonus while we’re at it…
+50% overheat bonus to ABs per level means +250%, or 3.5x heat bonus. ABs have 1.5x heat bonus so that’s 5.25x effectiveness. You would go 7600m/s with a T2 afterburner. Forget MWDs you won’t need them outside of gimmicks IMO. Just fit two ABs if you want that speed constantly because you can repair one while heating the other thanks to the bonuses that make mods repair super fast and heat slowly.