Implement and modify a few extra features to Magento PDF Invoice

need to implement those features to actual invoice for an online store based on "magento de" community using firegento pdf engine. here the version for downloading if needed: [login to view URL] *** YOU NEED WORK ON YOUR LOCAL MAGENTO INSTALLATION *** *** AND HANDOUT THE FILES FOR REPLACING ON OUR SERVER *** Please check the attached image file, otherwise you may read the stuff also as it follows here: - fix the image quality for pdf (need high quality images for print min. 300% zoom) - delivery address (if different to billing) (footer) - display ebay user-name if it was ebay order (header, right) - embed footer line image (you will receive as png file) - display instead simple product sku the configurable sku (for configurable products) - add the title for tax rate "19% USt.:" into the calculation (actual only USt.:) - display "Maturity of the bill: 5 days" only if selected payment method via bank transfer and/or if no payment methods were selected - add the order date and time and the date of payment for online payment method like paypal: "This Invoice is a part of your order from 03.06.2015 10:04:43. You payment was received at 03.06.2015 11:55:09." - change line height between the calculation of price + shipping and tax etc. (reduce) - display high quality signature image of the ceo with kindly regards - display the attribute delivery time for each position on the invoice below the product name and selected options for configurable products !!! important !!! need full documentation for all changes, which were done in which file and folder for the changelog for admin