I reserved a tri motor CT as the site went live, but the longer I own a Tesla the more I dislike the companies practices.
I purchased a 2019 model M3 med range in February of 2019. The next month they discontinued it. Huge depreciation. Now with updates (the SR battery now has a longer range)...
I have the model 3, the glass roof let's minimal light in. My dog and children have no issue with it. Go take a test drive in one, they are fantastic. And if you feel its still somehow too much you can buy blackout shades, I'm sure they will be available for CT. At or shortly after launch.