I'd need better pictures of the snake (from the top, and a belly picture too) to tell morph. I'm leaning towards either bloodred, motley, or stripe.
Corn snakes need a hot spot of 85 degrees. The ambient temperature doesn't seem to much matter for them as long as your house doesn't dip into the low 60s. They also do best with belly heat so you're going to want to find a way to elevate one side of the tank to allow airflow for a UTH with a thermostat. Corn snakes also love to burrow, so switching him to aspen would make him a lot happier.