Couch to 5K in 16 weeks? Sound good?

Does this plan sound good?

I know that many runner friends out there have used training plans...how does this sound?  

25/0 = walk/run

And would it be ok to elliptical on my off days?  I am shooting for 6 days of exercise with only one day a week off for weight loss purpose....

Phase I    Walk/Run    Month 1    Mostly Walking  (Times in minutes per day)
Week	M	T	W	TH	F	S	S	TOTAL
1	Off	25/0	Off	30/0	Off	Off	30/0	85/0
2	Off	27/3	Off	27/3	Off	Off	27/3	81/9
3	Off	24/6	Off	24/6	Off	Off	24/6	72/18
4	Off	27/3	Off	24/6	Off	Off	24/6	75/15
Grand total: 313/42

Phase - II    Walk/Run    Month 2    Mostly Walking  (Times in minutes per day)
Week	M	T	W	TH	F	S	S	TOTAL
1	Off	21/9	Off	21/9	Off	Off	21/9	63/27
2	Off	18/12	Off	18/12	Off	Off	18/12	54/36
3	Off	15/15	Off	15/15	Off	Off	15/15	45/45
4	Off	18/12	Off	15/15	Off	Off	15/15	48/42
Grand Total:  210/150

Phase - III    Walk/Run    Month 3    Mostly Running  (Times in minutes per day)
Week	M	T	W	TH	F	S	S	TOTAL
1	Off	12/18	Off	12/18	Off	Off	12/18	36/54
2	Off	9/21	Off	9/21	Off	Off	9/21	27/63
3	Off	6/24	Off	6/24	Off	Off	6/24	18/72
4	Off	9/21	Off	6/24	Off	Off	6/24	21/69
Grand Total: 102/258

Phase - IV    Run    Month 4    All Running   (Times in minutes per day)
Week	M	T	W	TH	F	S	S	TOTAL
1	Off	15	Off	15	Off	Off	20	50
2	Off	20	Off	20	Off	Off	20	60
3	Off	20	Off	25	Off	Off	25	70
4	Off	25	Off	25	Off	Off	30	80
Grand Total:  260