Are these two sentences worded properly?

FYI- The Council is the mage-lords. Szass Tam and his spellcasters then used their magic to raise a storm a sea to slow the Council’s flight in order to allow his forces to hunt down their quarry. The turbulent weather delayed the mage-lords’ navy long enough that they could not reach the Wizard’s Reach before Szass Tam’s ships and undead minions would intercept them, so the Council decided to confront the enemy fleet