It is unlikely that you can listen and do all the activites from the tapes in one day. Especially since some of the tapes will require you to leave it overnight. Even if you do you'd be spending approximately 12 hours listening/doing the exercises. Given the need for breaks for refreshement... I'd say there are not enough hours in one day to listen to all the tapes.

The most practical way to do it is over 2 weekends. You work with tapes one to 4 first weekend and 5 to 8 the following weekend. You could do it over 4 successive days. However don't be surprised if you get bogged down, it seems to happen when other priorities take over.

Alex