it looks good for veg, but theres not even close to enough light i had 300w on one plant and only got 45g dry. also you need a reflector your losing half your light even if your only bouncing back 50%of your lost light its better then nothing.
Maybe look into a big piece of duct that you can cut to fit over your lights. and use wooden dowels to keep the ends open.
i drew this really quick just to give you an idea, some one else had built one that looked real nice but i cant find the thread. Thats just the basics you'd have to built to suit your needs. I would try and get one wide enough the just fit over your lights as the are and maybe have it held up by a different chain that way your lights and just literally hang inside.
Good luck growing