new grower looking for a little help

hi everyone,

new to growing I am using the stealth rubbermaid tubs growing box. I used 6 cfl 23watt 5000k bulbs during the veg period. change last week to 6cfl 23 watt 2700k bulbs here is my problem plants getting close to top of box. i did lst on one ,should have done more i quess was sure about being a newbie to growing. I am adding pic to help see what they look like and what I should do to get a good crop on this grow. going to do sog next grow I think that will be better for my grow box.
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I think your going to need a bigger box. I read a great idea from a member named low_rdR about a way you could tie down the branches so it grows in a upward funnel shape.?I'd look thruogh different grow logs for ideas but if its just starting flowering you are going to get a big growth spurt.