Confirmed that the return is in April. So, with that being said and with my desire to re-watch the series leading in to the final season it looks like you'd need to watch (22) episodes a month in Jan/Feb/March. There are (67) episodes so you'd need to pick up an episode somewhere in there.
If you watched (1) episode a night just during the weekdays starting January 1st, that puts you at finishing the available seasons on April 3rd leading into the final season.
I know myself and know that I'm minimum (2) episodes at a time....so, I'm pretty sure I can get the series re-watched in time.