Thank you for your replies. Box jumps for 30 minutes does not sound a pleasant experience.
I may have read the text in the book wrong and my description above not the best as on Page 176 & 177 it gives the description and duration of the exercises and then on the table on Page 177 the number achieved beside each exercise. In the descriptive text above the table it says Number of box jumps in 60 secs but the table below says box step ups (point 5 in the text and table). At the moment I am doing the following exercises for the Alpine Combine:
1. Box step, 1,000′ with 20% of BW pack
2. Dips in 60 sec
3. Sit ups in 60 sec
4. Pull ups in 60 sec
5. Box jumps in 60 sec
6. Push ups in 60 sec
I will look at purchasing the 24 week plan and that will give me a better build up and along with diet and general hill walking during the summer my weight loss should be achievable and my base fitness at a good standard for heading to Toubkal.