Critical mass in a 4x4 tent..

For years i grew serious seeds chronic in a 4 plants per square foot set up. Now I want to grow critical mass but its a bush not a single cola plant like chronic. For years i grew serious seeds chronic in a 4 plants per square foot set up. Now I want to grow critical mass but its a bush not a single cola plant like chronic. Does anybody have any experience growing critical mass in a 4x4 space ? I am trying to figure out how many plants will maximize this space and how long to veg for the biggest yield. The tent is 4x4x6.5, i grow in promix under an air cooled 600 hps.
Any input would be great !!
Also here is a link for critical mass http://www.kindgreenbuds.com/marijuana-strains/criticalmass.html
TYVM Te lilman

i am growing 12 critical mass plants in a 5x5 tent 100w air cooled in a local potting mix with coarse perlite ,i vegged for 1 1/2 week from clone and set them to a 13/11 light schedule,at about 18 inches .they can stretch up to 150% ,they are in there first week and a half of flower and they are just over two feet with an uncountable amount of bud sites ,i have the 5 gallon containers close together and the critical mass grew like bushes but all the lower branches all came to the top like a natural scrog.I'm using the advanced nutrient calculator as a guide but in my own way.i just finished 24 chronic plants and the smoke was great every one loved it ..R.I. GROW