Magento EE, ONIX import.

Hello, I am looking to create a new website based on our existing site. I need someone/company who knows Magento EE in and out, to do a large scale import, directly into the database for updating and adding products. This would in include adding/updating products, assigning the images, categories and all attributes associated with the ONIX import file. In addition to the ONIX import, there will be an additional inventory position file. This is a CSV file containing SKU’s and additional product information that also needs to be imported. Aside from updating the SKU with the inventory file information, there will need to be a function that sets the product to disabled if the Major status =’DLT’ in the inventory file is found. SKU (ISBN), QTY, Major status, Copyright, Pubdate, ?, Minor status, Selling Zones, Discount "XXXXXXXXXXXXX",0,"ACT",1989,04/01/1989,,"O/S",O,.05 "XXXXXXXXXXXXX",0,"DLT",1989,04/01/1989,,"O/S",O,.05 From the ONIX file, you will need to create the grouped product and then assign the simple and virtual products. Some data in the ONIX is numeric and needs to be mapped to a word or phrase during import. As an example <b035>A01</b035> would be ‘By’ A01 By A02 With A03 Screenplay by A04 Libretto by A05 Lyrics by <b034>1</b034> <b035>A01</b035> <b036>John Smith</b036> <b037>Smith, John</b037> <b039>John</b039> <b040>Smith</b040> Import ONIX file for grouped, simple and virtual products. ONIX and Inventory full file size 200k in products. The Source format is a Short-tag ONIX for Books format (XML). This ONIX import has already been mapped to a Magento EE DB using the API and is working. Now the product import has increased 100 fold, and 24+ hours to import 2,500 products, just can’t work anymore. I am open to suggestion if you think the direct import into SQL is not the best option. Fixed price or hourly.