I got ambitious and slapped this together, how would it fare in epic?

(Yet Another) X-Wing Miniatures Squad Builder

Brobots isn't bad but a 71 I repeat 71 point Kath is... man that is a crap load of points to sink into a firespray. Like A LOT of points. I am not totally sure all of those bombs, both on Kath and the bros, are worth what you give up in warm bodies. I think you may want to retool Kath down quite a few points, get some cheap firing arcs, and smash face with brobots.