I am in no way qualified to answer the questions you ask but I have one for you. I thought that one of the advantages of a canard is that the relative incidence between the mainplane and the foreplane is arranged so that the foreplane stalls first and thus automatically lowers the nose into recovery. This is obviously not the case with your aircraft if the elevator power is insufficient and needs the assistance of power from the high thrust line. Do you know why it was designed like this ?.