Okay advice needed.

I will be going away from tomorrow. Until monday or sunday. Should i leave The lights on to my plants. I will make sure i water them thoroughly tomorrow so they wont dry out. But Should i leave the lights on? I run 4 100 watt If i shouldnt leave the lights on for 72-96 hours what should i do? I heard that it would actually do better to start them at 24 hrs for the first two weeks and then Start flowering them. Any tips?

***Edit***
This is my first grow after many failed attempts regarding not having correct lights ^__^

I start mine off at 24 hours and they seem to do ok. As for the lights staying on, as long as they dont get to hot it shouldnt be a problem. but just remember its always better safe than sorry.

Thanks for the help bro. Hmm More input from anyone else...Although i think im going to keep em on.