You're alright, no worries. We'll get you sorted out it just might take a little work. Plywood would be fine. Paint all this shit white and get setup with good ventilation and your lights. Test you temps and all out before you put her in and see how that boat floats. If it sinks, we'll figure something else out, gal.
In the meantime, can you not move your lights up at all?
Or maybe tie her over to the side just a little to get a few inches?