Hm, yeah, I'd say that looks to be in that annoying inbetween space - a little bit big for a cruiser, but a little bit small for a capital. Kindof like the Shrike and the Falcon, for being inbetween sizes.
As such, I'd say it ought to be classified as a capital ship, but given stats that are closer to cruiser-level. (I'd also suggest making it a functional combat freighter, but then, I suggest that about anything civilian; I'm not much a fan of ships that are just stat-sticks you'd never want to deploy.)