In the evenings the wizards have time to cast spells at the weapons of the others. You have a total of 5 evenings of 4 hours plus one day of 8 hours = 7 half days to prepare weapons with spells.

You will find Bilo willing to assist your wizards in casting spells. He is still willing to enchant weapons of your warriors, at 2 Gps per strength point he must spend.

Now continue marching.