Changing lighting mid-flower

I had to remove my two plants from the 2.5x5x6 tent they were in because I was out of adjustment height. I have them under the same 400w custom built LED, but am concerned they may not be getting enough light since it no longer is getting the reflection from the sides and bottom.

I have a 315w CMH light I can throw over them in addition to the LED, but I am not sure how the plants will react to the change in temp and spectrum.

Thoughts?

Use both lights
Never have to much light
Only to much heat
I'm running about 3000w over my 4x8
So you should be fine as long as your temps stay ok