I read the whole thing on my morning break at work (while eating a yogurt and drinking coffee) and it was an enjoyable read while not being as long as some of my double century posts, so no worries there.
Regarding lack of motivation, it seems to me like you're working too much and not getting enough sleep. That would do me in for sure.
Plus, I've always found the SART to be boringly flat so I would advise some long mountain road climbs to break up the monotony of SART rides. Although I only know the western SART, the eastern bit may be less boring . . . I don't know.
Rick / OCRR