aero port question

[nsuvltr 0]

pic is my current setup. Thinking about walling it off and going to 9. How many
aero ports and what dameter should I use. Everything will still be behind the
third row. 

[jcarter1885 994]

3 - 4" aeros will do, should slam

[Adrian_D 520]

Port area at least a third of the cone area