exchange school

Yesterday my school ofert me go to USA as an exchange student i dont´t know if i should go because i don´t no one there plus if i choose go to USA i won´t be having my travel for my 15 birthday (is like the sweet  16 but in latin america) if i choose the travel for mi 15 i´ll go to Europe (Italy,France,Spain,German,Greece and others) butif i go to USA in mi last 5 day i´ll go to NY and have a lot of activities there.

I don´t know what to do

What woul you do on my case?