Suppose we have a creature with a base move speed of 50ft. Suppose that creature is standing on a small platform and wishes to jump across a gap 15ft wide to another small platform. Also suppose that the square the creature is initially standing in and/or squares along the path to the other platform are threatened by an enemy.
Can a jump be combined with an acrobatics check to avoid attacks of opportunity?
If so, what would the bonus from move speed to the jump check be? +8 because the creature is 20ft above 30ft speed, or -4 because the creature would be reduced to moving at half speed to avoid the +10 to the DC for the avoiding attacks of opportunity check?