I don't want to say it's a bad idea, but going on a trip alone at your age might not be the best. Have you talked to your parents about it?
Traveling alone can be cool, you get to explore new places, meet people, and learn stuff. But the important thing is to stay safe. Since you're 17 and may not be well familiar with the world. However, if you've decided to head out on your own adventure, take the time to learn about your destination, and don't forget to keep your SOS feature on your device handy. Have a safe and good trip.