binary newsgroup poster (NNTP) / upload and download tool for usenet -- 3

Hello, i´m looking for a programmer who can write an upload / download tool for usenet.
NNTP (binary newsgroup poster).
usability, stability and security should come first.

please keep in mind that changes may still be made during testing!

My Requirements are:
-Combine the settings of the programs mentioned (ngPost, Nyuu, NewsUP, SabNZBd)
-download functions like the program "sabNZBd"
-for Windows (With a proper installation routine and as an .exe file!!)
-C# or Python
-NNTP (Network News Transfer Protocol)
-modern GUI and a nice logo :)
-source code, commenting on the source code properly !
-expandable !
-API usage
-work with rss feeds
-Periodic check if files still complete
-option for hidden autostart
-The program is supposed to download a certain sort of links like url use with an browser or pdf with an pdf viewer
-rar/7zip support
-multipar support (https://github.com/Yutaka-Sawada/MultiPar)
-automate posts by scanning folder(s)
-auto delete files/folders once posted
-full obfuscation of the Article Header
-support several servers
-Header check
-Schedule posting
-create backup plans as automation work flow
-more.....

Please make realistic offers and no fake offers where afterwards the price multiplies.
Thank you