1st Time Grow Setup and issues Advice welcome

I have setup a grow room outside in my garage, it has gone well except for the cold weather keeps coming back. I The three plants on the floor were started in January and the others were started in February, I want to start the veg cycle on all of them at the same time. Sorry for the pics but the MHL bulb does not make it easy to take pics. All advice would be appreciated. I am using Dyna-Gro "Grow" for the veg stage and plan to use Dyna-Gro "Bloom" for the bloom stage. I haven't taken clones yet but will in about 2 days. I will start the 12-12 cycle after that. !Please Help!

What is the question?

that is a great example of good light distribution in the last pic.

if the plants on the floor are having problems with the cold, getting them up on something insulating, e.g. a piece of wood, will help.

you are in the veg stage, btw.