Assuming it has the same arrangement of ventral armament as the Galactica, then it's punch equates to half that of the Glactica itself. That makes it a pretty effective mutli-purpose cruiser with plenty of punch, requireing a hell of a lot resources and crew than a Galactica class Battlestar. Given it's roughly half the size and has roughly half the armament, two could be built and crewd for the price of one Galactica, and that allows a lot more flexibility on deployments and operations, and allows more advantageous tactics than a single craft permits. It looks viable to me - there's no reason Vipers couldn't use it; there could be some kind of arrestor barrier to prevent screwed up landings going too "deep", a bit like the RHAGs (the raised catch nets at the ends of the runway) on NATO runways and carriers.