5-to-1 Launcher/MFC ratio, which is excellent but can be a bit of an overkill if the ship will never operate alone. Range is bit short for any longer deployments but with tanker support it can be managed easily enough. Did you use the Missile Design Tool to create the AMMs? Since you're at Magneto-Plasma engine level, those hit chances seem a bit low. Playing around with speed vs agility, as well as the amount of fuel carried, might improve THC. Nearly seven million klicks is quite a nice range for an AMM, not necessarily useful since the ship will operate as part of a task group. Magazine is definitely on the small side, that amount of missiles can be easily expended in just a single engagement. Against even a handful of NPR missile-armed PDCs, you'd need at least five of these ships if not even more.
But all in all, it's not a bad design by any means. As you wrote, combine this with several sister ships, PD ships, and a tanker, and you'd have a pretty effective defensive group.