Rough Draft For Grow

My friend offered me some low ryder seeds so I decided to try to build a little grow box that can hold one plant at a time. Low Ryder plants are quite small so I don't think it'll have to be very big.

I can't grow it inside because of parents and all so I thought it wouldn't be too hard to dig a hole big enough for a one plant box.

Things I need advice on are the following:

• What material I should use to build the grow box.
• Light cycle for just one plant
• Source of electricity for the light- I was thinking about using a car battery because I can't use a normal power outlet

The thing I need help on most is how to build the actual box. What material I should use to build it, what I should cover the inside of the box with, how far away the light needs to be from the plant and at what cycle, etc. I'm pretty new to growing especially "indoors" even though it'll actually be outside so I have lots of questions.

Any answers and help will be very appreciated, thanks!

To be honest just wait and plan for a grow without parental oversight.
A hole in the ground will be cold. You can't do shit without even an extension cord to your hole in the ground. No heater and not even a Cfl or two No prayer of going 3 months recharging a car battery every day to get a harvest.
If you try Flat white paint and 12/12 from seed. Light as close as possible.
Daniels