Grow setup question

Is this tent big enough or 2 females? throughout the whole grow cycle? with a 400 watt hps light?

http://www.amazon.com/LED-Wholesalers-GYO1001-Reflective-Hydroponic/dp/B00283Q59M/ref=sr_1_3?ie=UTF8&qid=1324667235&sr=8-3

thanks guys

Yes more than adequate