You will not need a large amount of "cash" here, so get around US$ 200 in cash. You can get the remaining money as demand draft, traveller's cheque or traveller's card. It takes around a week to get your account functional. Besides the fees, you will need around US$ 1200 initially for settling down during the first month of arrival. We would recommend keeping another 1000$ extra, just in case of emergencies.