Your right about preflower. If it's an auto, I'd leave it and let it bounce back while I LST the lowers as they poke their heads up. With photos, time is on your side. But it does look tight in your space so you should just train it down now. First 35ish days of flower are stretching days. So it'll eat the room you have left if it goes unchecked.
Answer. No, dont top it, the "break" was basically topping it, now it's focusing on toughing up the lowers.