Hello Mr,
I have been reading your requirements, I have more than 5 years experience working with SSIS and C#. I work full time in a Bank using this kind of technologies all days, and I work as freelancer after office with a team of people with a lot of experience with SSIS and DTS, C# and SQL Server. Based on my experience, I know I can do it in 1 day max 2 if I found some unexpected problem.
Sicerely,
Sandro D. Garcia
MCTS #408591