First congrats on getting your first harvest and 100% clone success. Like Herm said, it really depends on several factors. How big did the girls get this time? If you veg clones for 8 weeks, they are going to be very big as clones get there a little faster than growing from seed. You could put 8 plants in and equally space them and let them grow pretty much straight up, top them once and keep them tall and narrow. Flip them when they are about 10-14" tall. Did they double in size after you flipped them to flower last time?
Also if you don't have the money for a smell filter, go to the pet store and get some charcoal impregnated filter mesh. It comes in large sheets. Just cut several pieces to fit over the end of the intake to the exaust air, it works quite well for about a month then cut another one and do it again. You can also get activated charcoal in containers. you can pour about half of a container out in a plate and set it where one of the fans in the room will blow on it and it will absorb a lot of smell just like that. Just go in every few days and mix it up so that fresh charcoal is on the top, then change it out after about 6 weeks or when you start to notice smell when you open the door.