BBVD

Area 204 Okanogan East is pretty descent for Mulies or whitetails but I would recomend 215 Sinlahekin which has a good chance at a good Whitetail or Mulie and also Area 249 Chiliwist(I grew up near it in Malott)Has a few Whitetails but in recent years some better sized Mulies and the only other area I would pick would be 242 Alta which is descent.
But if I was to pick one it would be 215 Sinlahekin as I think you have the best bet for a good deer and the scenery is awesome.

Hope this helps some. I grew up over there and hunted alot in the Sinlahekin and the youth hunts always seem to do good.

GOOD LUCK