Help on a birthday party?!?!

Hii! So my birthday is next month on the 13th & I will be turning 13 years old! I already know who I will be inviting. My best friend & my other 3 guy friends. So it'll be just us 5.. (Btw their all 13) Me & my best friend were thinking about all of us going to the movies to watch a movie & that's it, but I kinda also wanna do something else, but not sure what!? Help! I was also thinking of going to one of those bouncy places where they have all those bouncy equipment & stuff instead of the movie because that is a lot of fun! Lol! I'm just not sure what to do! Any ideas??? Please? Also, should I have a cake or no? Cupcakes? What? Should we come back to my house & do something? I'm not sure if a sleepover would be a good idea... It'll be just a little awkward. Haha. So any ideas please? It'll help a lot! Thank you sooooo much!!!!!(:

~Isabel!(: