i'm in week 9 of pfitz's 18/55 marathon plan with a goal marathon at the end of may. i was looking at my race schedule and trying to figure out if running an 8k, 10k, and 1/2 mary on 3 consecutive weekends would be too much? the half mary would fall exactly 5 weeks before my marathon. i'm also not great at using a race as a training run.. i'm still working on being disciplined enough not to go all out so thats an issue too. thoughts?