The Application Process

Dear Experts,

My name is Pranal Rai. I am software engineer and working with france based firm from last 6 years. My total experience(6 years) is in banking and finance domain for U.K.'s most reputed bank Barclaycard. In my acads i have received throughout 75% +.
In GMAT i have got 620 and IELTS 7.5. I had applied to WHU, Germany for full time MBA program and got the admission in this school.

Could you please help me on the below questions:

1) Is Germany MBA is valuable? If yes, whether WHU is a good choice?
2) How much time will it take to get the germany student visa as the session of WHU will be starting from 01/03/2010. So i am not left with enough time?
3) I have applied to the below schools as well :
-> Imperial
-> SAID
-> CAAS
-> BATH
-> HHL
-> Henley

As the session of WHU is starting too early, i am in a dilemma and not able to decide, whether i should have to wait for the other school's reply or i should accept WHU?

I am very desperatly looking forward for your suggestion.

Regards,
Pranal Rai