Visual studio package using Visual studio SDK for Project conversion.

We are into a project development for long time and our build environment are little bit different from visual studio environment as this C# coding started very long time back. Little overview of the current environment.. we have huge number of cs files and meta file (similiar to cs proj file) for every assembly... Our build engine takes the meta file and submit to C# compier to compile. Now we want to move towards VS environment... So the requirements are 1. Develop visual package to include toolbars and menu to convert our project style to visual style. 2. Kind of parser to convert from meta data file to cs proj file. 3. there would be some more configurations related tasks. We need to finish within 3 weeks.. Please bid if you are very serious about this and have knowledge on C#, Visual package. I am expecting very good quality code.