[Pharo-project] Pharo/Seaside as back-end for a social media app

Hi all, I plan to build a social media app, initially targeted to iOS clients. I was wondering if pharo 1.4 and seaside 3.07/3.1 are enough for a back-end where at least these requirements are expected: + Rest communication (I can use Seaside-REST) + Media transmission, ie sending/retrieving Photos and Videos (What Seaside modules I can use for this?) + Database communication (I can use GlorpDBX) + Ouath2 authentification (??, I understand that CouldforkSSO is a client not a server) + Scalability, where I can easily grow from hundreds to thousands of clients. Do you think Pharo could meet that requirements or I must use something less cool :-(, such as ruby on rails. Thanks in advance. I'll really appreciate your comments. Cheers