The easy Loppet training plan - phase 1

I am a decent recreational skier.  I ski for fun (and to keep somewhat fit) and hopefully can reach some milestones from time to time.  My training program takes into account available time, how I feel that day, the weather...in other words it is flexible.
A 5k run with variable intensity (alternatively a hilly 8k when at the cottage) followed by some stretching and strength exercises 45 mins total.  I will try and do this 3 to 5 days per week, although if I miss a day (or two) I don't worry about it.  Leading up to the winter I can usually get a 15km roller-ski in at the weekend.  It would be good to add some intervals to this, but hills included in the run are a good proxy for this.  The fitness level this provides will get me through most Loppets with a smile on my face and no lasting after effects.  I will aim to add some science to this in future posts.
P.S. Never unconditionally believe a post with the words easy, Loppet and training in the same sentence!