I took a quick look, there are now about 22 teams with better rankings than you, 17 or 18 of those teams will most likely win their league. So there would be 4 or 5 teams better ranked than you. The 16 teams with the best rankings will go to Div III, but because only 41 of the 80 IV leagues have player teams... I wouldn't be surprised if about 50 teams with the best rankings will go to Div III.