help needed!!

[amnesiac]

well my 600w hps arrives tomorrow and i still havent built my scrog. im starting to think my plant is too big for this screen, and that as a first timer maybe i should just watch her grow out as is. if someone doesnt talk me out of not building a screen, im just going to flower her without one. it seems as though i wouldnt be able to bend her over far enough for all if any of her other branches to fill up a slot. i need some good advice. ive already got all the lumber and screen so i feel kinda bummed. and now for some reason i cant seem to upload any pictures. what a rainy day.