I think you're off to a great start tarzanman but here are two points:
1) Brown doesnt have a business school
2) I'd agree with method, you should definitely work full time for atleast 3 years. I'd personally recommend 4 years. Let me explain why this is important (I think I've said this elsewhere as well but nevertheless)
a) You need time to understand who are you, your likes/dislikes and interests. Plus, entering the job market and working full time develops you as an individual in a way that university simple cant. Thus, when you go to b-school, you'll end up bringing something tangible to the table in terms of your experience.
b) Post-MBA, when you're applying for jobs, prospective employers will ask you what you've done so far and if your answer is "sorry, I havent worked anywhere yet but here... I've joined many clubs and done a lot of stuff". It has a much lesser impact and could go badly for you. Instead if you can say something tangible like "I worked for XYZ firm, got promoted every year and in my fourth year even managed to lead a team of 5 ppl" then that tells them that you've got some great real world experience and that you could handle a working career.
c) You can save up some money!! Living costs during the MBA program are going to be quite high so use that time to build your coffers.
I hope this makes sense.
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