Hey TRP, ran into a wall and need some advice to overcome it.

Met a girl a week back, and after a couple of days of tension, we ended up making out in an empty hallway of our school (unfortunately I;m a senior in highschool). We had sex, but setting up this event was extremely difficult. I can't bring girls over to my house because of my very religious father, and this girl that I'm currently seeing has very strict parents. Me, my sister and a few of her friends ended up going to her house for Halloween, and after a while we got lucky and had a brief five minutes to fuck in a dark closet.

The deal is, the whole stress about being quick about it ruins the immersion, makes me nervous and makes the sex less enjoyable. Her house is not an option (dad won't let me go often), school is too risky (even after classes staff presence is ubiquitous, even in deserted halls), and she doesn't have a car and needs to take the bus home. Any solutions to this logistical nightmare?