Why dont you just use "Drivehq.com" its what my friends and i use with our phones, They give you 1gb of free storage per acount if you need more just open another account. My friends and i use it all day to share Games, App's, MP3's and much much more, but we also have accounts set up with tons of stuff already stored like you want
""its also helps when you all have the same Owner ID or Hotsync name
....lol""
youll need a software that can use an FTP connection "I recomend Resco Explorer" PM me if you have any questions.