Required packages for java

Hi,

 Greetings!
 We are evaluating pdf tool for one of our web application which runs in Java/J2EE.
 we came to know about aspose and wanted to check the feasibility of integration with application.
 below are few of our questions which we need some clarifications.
 . Html to pdf conversion

 . support for all standard html tags
 . editing the pdf file to add images at absolute position, replace text
 . support for multilingual(English and Arabic)
 . adding barcode generated to existing pdf file
 . appending pdf file to existing(merge two pdf files)
 . adding header/footer images
 .

 For supporting the above mentioned features, which all packages/licenses we need to purchase from Aspose and the cost of the packages.
 Please let us know the details on the product purchase and required licenses. And also we need technical support to write small pocs for the same.
 
 Thanks,
 Shivaji