sounds good to me wlel i have a wide selection of differnt autoflowering seeds i intend to grow and well bassicly just wanting to know if i have summed it up right

i intend to leave them in my grow room with a light cycle of 20 hours light and 4 hours off all the time i have 3 200w lights on the go and 1 400w light on the go and im basicly going to water them twice a day
and im going to give them neutriants every 2 days and i am going to continue doing this for around 8 weeks in total the seeds i have are femanized seeds. is there anything else i need to be carefull of ? i know the seeds are basicly desinged so that they are vegative and then flower straight away. but is there anything im missing or wot i need to be carefull of as i am about to set up my room and begin to grow them