Amanda,
Firstly, get it out of the bucket,
place in on newspaper and cut off the bottom 1/3 of the root ball. Then let it dry ON THE NEWSPAPER another day. The reason behind this is to allow the cuts to air-dry heal, as you would a cut on your finger.
Secondly, check the true garden stores and nurseries, not the "box stores". I suspect they may have a small/fine fir bark suitable for orchids that would work. Do not let them talk you into a pathway grade or redwood. You might also check with a hydroponic store, if there are any in your area, who might carry coconut chips in compressed bales.
Hope this helps.
CL