agreed with all the others here and I think there is some really good advice and experience out there. But here's some food for thought and somethings you might want to ponder on. (and this is not to deter you from doing it)

1) What are you objective for getting an MBA?

Make more money? Easier to get management level jobs? Network and alumni support? Just chasing after the 3 letters after your name? (honestly that was something I thought about!)

2) Cost/Opportunity Cost vs Benefits

The amount of money you spend to get the MBA- Will it reap greater rewards monetarily. The time and money you put into it.. will it really also make life easier/better? Benefit > Cost?

Those are some things to think about and SithJedi can probably also chime in since he's a Stanford MBA grad...

Just a little background.. I was accepted both into Haas School of Business (berkeley) and also the Santa Clara Univ MBA and law combined program and decide not to go many moons ago. I also had my CFA already at the time.

My reasoning was that:
1) getting my MBA really at that point was not going to get me any more $$ than what I was making or will be making at the end of the program.
2) The cost was prohibitively high ($50-60K/year)
3) although the alumni network is great, I had other venues where I could network just as well.
4) The curriculum was nice but at the end of day, you can gather the tools yourself through research and the knowledge gain is predominantly IMHO common sense.

Everybody has different objectives. Your job should you decide to accept it, is to allign your objectives with the appropriate resources to get to a certain end.

Good luck bro!