Options to bulk populate commerce_file fields for masscreating digital products from files

I am wondering what the best approach might be

Required Functionality for Digital Image Store:
File management, import from FTP & upload Options to bulk populate commerce_file fields for masscreating digital products from files

OPTION1: Upload or import via http://drupal.org/project/media and subsequently convert to products
- Feeds csv fetcher and http://drupal.org/project/views_data_export (view of files)
Needs: feeds mapper to map existing files without duplicating them http://drupal.org/node/1162602
- http://drupal.org/project/vbo
Actions & trigger
http://drupal.org/node/1186162 allowing commerce_file to use existing media assets

OPTION2: Import directly into products
- http://drupal.org/project/feeds_fetcher_directory
No parser http://drupal.org/node/1240036
- http://drupal.org/project/media_mover
Not ready for production

OPTION3: Create a dedicated module allowing to import from directory or massuploading
- Using code from Fupload and http://drupal.org/project/commerce_bpc integrating plupload or http://drupal.org/project/imce
- Use the media selector widget for commerce file fields on the http://drupal.org/project/commerce_bpc form as combinations for mass creating digital products, use a image/media/styles formatter for displaying a derivative image which doesn't count as a download (settings for "free version"/teaser format)

OPTION4: Automatically map media uploaded via media module to commerce files
- http://drupal.org/project/relation
- http://drupal.org/project/rules --> requires media to define a trigger http://api.drupal.org/api/drupal/modules--trigger--trigger.api.php/funct...
- http://drupal.org/project/media_browser_plus plugin

Further thoughts: defining titles, skus and prices for commerce_products when mass-reating

use http://drupal.org/project/exif data for title and sku:
- exif data doesnt get read on plupload, only after node update this might be adressed in http://drupal.org/node/667958#comment-5017480