My First Grow!

For my first grow, I am growing in a 3x3x5 grow tent with a 5 gallon dwc hydroponic bucket (northern lights auto), a small pot with fox farm happy frog soil (raspberry cough), a 300w growstar cree cob circular led light, a 4in exhaust fan, a small humidifier, hygrometer, and a small flap open near the ground for passive intake . I am now on my third day of grow. The northern lights seed had finished germinating three days ago, and i put it into a rockwell cube which was then put into the dwc. I am in fear that I may have hurt the seed by accidentally touching it’s tap root with a tweaser when transporting it to the rockwell. The raspberry cough seed is on its second day of germination. I have it between two wetted paper towels by filtered water, two ceramic plates, and i put it inside the grow tent. The main problems I’ve been having have been cooling down my tent due to outside hot weather. I live in san diego and it had just started being in the 90°s f so my grow tent has been reaching temps of mid 80s at times. I have combated this by turning on a fan attached to an outside window while colder outside and then moving it to a separate window farther away from the tent that blows hot air out of my room. I have also combated this by opening more intake flaps, closing my window near the tent, turning on my house fan and my ceiling fan, and adding another small fan inside. My plan is to grow my northern lights auto as fast as possible (at least before i switch my raspberry cough to flower), to use a 18/6 light schedule for both the northern lights and raspberry cough vegetation. I also plan to grow my raspberry cough as fast as possible but also at the best quality i can.