Summer Schools - are they a good idea in my case?

Dear Precision Essay Team,

as you are, in my eyes, an elite consulting company, I wanted to know your opinion on US summer schools. I'm sure you can evaluate the usefulness of such summer programmes, based on your experience with many candidates.

A few words about me:
European, 25, BSc in Business Administration (3,2), MSc in Financial management (Valedictorian 3,7), heavy international experience within Europe, having some fortcoming management consulting interviews. 4 years of work experience in Project management (own start-up) with internships in Big-4 and financial institutions.

So...right at the beginning - I know the typical summer schools are paid and not that competitive. So they generally do not contribute that much to your profile. Therefore I've picked both the SIGM (Stanford) and SBSP (Booth), which seem to be pretty picky and offer 4 week programmes. My main goals for doing such a summer schools are:
- to show dedication,
- further develop some skills (although as a business major I doubt that would be the fact - most programmes seem to be developed as mini MBA's for non-business majors)
- networking and have some experience in USA
- just put a strong brand on my CV, as my previous education institutions may be well-known in some parts of Europe, but are not known outside their respective countries

4 arguments, which should cost me between USD 8,000 and 10,000. Do you think it's worth it? Wiould they contribute in some way to my future MBA applications (2013 or 2014)?

In parallel, I try to gather some scholarship for two other summer programmes - some summer seminars talking about freedom, liberty, market economy etc., which may be for free (again in the USA).

So, I'll very much appreciate feedback and insights from people who have visited such programmes at Booth, Stanford or Harvard (though a regular summer schools without getting a certificate or so). How did you feel about it?

Thanks a lot for your time!

Regards,