What should I do I dont want to hurt my grandmothers feelings?

Don't fully unpack and get too comfortable.

Be honest and tell your grandmother that a 10pm curfew is too early for your lifestyle and rather than make her worry herself sick because you won't be able to maintain a 10pm curfew that you will be moving in with your aunt as soon as possible. Make no excuses and give no other reasons because it is all on her with her silly curfew. I respect her wishes because it is her house, but 10pm is sometimes impossible to make it home on time. What if you were an hour drive away? You would have to leave at 9pm to make it home by 10pm? Nah.

It's obvious that you should be living with your aunt, and visiting your grandma often. Bring up the 10 pm situation with your grandma, and explain that as she is unhappy with you coming in later than that, then she is going to be constantly uneasy, because you won't be able to stick to it. Give her a present (flowers or a plant?) for allowing you to stay, and tell her that you'll be moving over to your aunt's house, and will visit her often.

This isn't answering your question. However, I would stay with your grandparents. It's good to have limits and someone who cares. You need a good role model. Don't ruin your life. Who stays out until five? successful people? It sounds Like you have a great future with a good head on your shoulders. Good Luck

I would say your grandmother would appriciate it more because they would want to spend the most time with you.

Tell her you love her but she's too strict.