Chow,
You would want to make sure that your standing bid is in the order that you want it regardless of any type of COLAs or Furloughs. Just fill it out as if you weren't being furloughed. If you are in the line of fire for a fulough, then it won't matter how you bid since it is based on seniority. Now if you are not in the line of fire, but you are trying to bid the best quality of life, then I would recommend bidding CRJ50 FO/100%.
Unfortunately they probably won't furlough etc. and then have another bid.