Hmmmm the judging criteria sounds a lot like IMAC, except we get judged on the turn around maneuvers too. Pattern has no scale realizm criteria but has constant speed requirements and judged turn around maneuvers. With pattern you need to fly the entire sequence inside an airspace " box ". Neither disciplines have guys adding ballast to their airplanes. In fact, pattern has an 11 lb maximum weight limit.

I hate to tell you but with any powered model, simulating constant ground speed in the wind is much easier with a light model with lots of power.