orders

I have a Drupal 7.4 Website setup (winginitairventures.com) using Drupal Commerce 7.x1.x-beta4 and Commerce PayPal 7.x-1.x-dev.

Issue: On the orders page I need to add two fees:
* (General Admission Ticket QTY + Reserve Seating Ticket QTY) * 25 = Admin Fee Total.
* (Hotel Package A QTY + Hotel Package B QTY) * 20 = Hospitality Fee Total.

Attempted Solutions:
1) I've searched for a Fee Module, but I have not found one
2) I've searched for a Bundling Feature (might work), but I have not found one

Big problem we're facing right now is that Magento have no core API for managing orders. Is it not possible also to set up any SSO solution to avoid Drupal / Magento double login. Any ideas or suggestions ?

We're actually planning to write some modules for Magento, but if you have quicker solution, ... :)