I'm considering starting a new website with Drupal. It's a community portal with articles, forum etc. + ecommerce. The project might later on need a lot of custom development and I'm looking to use a framework such as Symfony2 for that. There are 2 main questions that would help me understand if Drupal would be a good choice for the project:
1) Drupal 8 is far from being available, so I'd have to start with Drupal 7. When Drupal 8 comes out, do Drupal developers plan to provide an upgrade process from Drupal 7? From what I understand Drupal 8 is quite a rewrite and if that involves changes in the database schema, upgrade might be a bit difficult?
2) Anybody having thoughts on the feasibility of later combining Drupal 8 with the Symfony2 full-stack framework in order to develop custom features in the Symfony way? I guess since Drupal 8 uses some of the Symfony components, it would allow for adding more bundles etc. so that shouldn't be a problem?
Any thoughts are welcome