if you have never tried TSE before ...and then just put all bet on Jan...that will be quite stressful to you ...if I were you ...I will try Nov first ...get some general idea or feeling about TSE...then when you take Jan's one you will be more confident...
by the way...I am also contacting PRC NEEA and ask them when shall the students gonna register on Jan's ...although ETS said there would be one on Jan and March...but you know ...everything can happen...