This response is provided based on the information you shared and should not be used as the sole source for making a decision. You should seek guidance from the chain of command, IG, JAG or other certified agencies before making any decisions. How you chose to use this information is totally up to you and is your sole responsibility.
This is all dependent upon the needs of the Army. If Campbell is still short your MOS and Grade and there is no other higher priority assignment you will most likely go to Campbell. You should consider calling your assignment manager at HRC as they can look and see what the strength for Campbell looks like a provide you with a more informed decision.