Move from 150w CFL to 600w HPS? 6 Weeks Flower

I have a plant under 150w CFL, and it's 6 weeks into flowering. I want to move it from the cabinet to a bigger grow area under a 600w to finish it, all by itself. The plant is in a soil container. Will this shock the plant, or will it take advantage of the extra light?

Thanks.

i dont know why it would shock the plant as long as u keep the temps in check and the light cycle the same i dont see why it would stress it out

That's what I figured, but I didn't want to ruin the plant this late in flowering

Can anyone else confirm this before I actually make the move tomorrow?

Just dont get the light too close. Keep the temp cool enough, and you're good.