Switching marathon training programs

I'm switching my training program to Hal Higdon's Novice 18 week marathon training program:

Week	Mon	Tue	Wed	Thur	Fri	Sat	Sun
1	rest	3 m run	5 m pace	3 m run	rest	8	cross
2	rest	3 m run	5 m run	3 m run	rest	9	cross
3	rest	3 m run	5 m pace	3 m run	rest	6	cross
4	rest	3 m run	6 m pace	3 m run	rest	11	cross
5	rest	3 m run	6 m run	3 m run	rest	12	cross
6	rest	3 m run	6 m pace	3 m run	rest	9	cross
7	rest	4 m run	7 m pace	4 m run	rest	14	cross
8	rest	4 m run	7 m run	4 m run	rest	15	cross
9	rest	4 m run	7 m pace	4 m run	rest	11	cross
10	rest	4 m run	8 m pace	4 m run	rest	17	cross
11	rest	5 m run	8 m run	5 m run	rest	18	cross
12	rest	5 m run	8 m pace	5 m run	rest	13	cross
13	rest	5 m run	5 m pace	5 m run	rest	19	cross
14	rest	5 m run	8 m run	5 m run	rest	12	cross
15	rest	5 m run	5 m pace	5 m run	rest	20	cross
16	rest	5 m run	4 m pace	5 m run	rest	12	cross
17	rest	4 m run	3 m run	4 m run	rest	8	cross
18	rest	3 m run	2 m run	rest	rest	2 m run

Hal's the Author of Marathon: The Ultimate Training Guide, which I'm reading. His site is very informative.