Sarah,
I also think you should wait and get the LV Speedy later since that bag can be purchased online. Hermes does sell some Cadenas online but not a large selection. I think you should make you first H Boutique as fabulous as possible!!
Have a safe trip and a great time!!!
Well.... looks like I don't have to worry about buying the Speedy! My mom called me today and said "Look, your dad and I can't think of ANYTHING to get you for Christmas..."