@GeorgeLeon
Right now the recommended setup is a single node cluster with everything enabled. In your case that would mean option A.
To get the most out of the single node cluster I would recommend that you configure the node above the minimum recommended size, witch is 4 cores, 8GB Ram.
Personally I run tests on a 8 core + 14 GB ram ( Azure VM A4, http://azure.microsoft.com/en-us/pricing/details/virtual-machines/)
This will of course change when the RTM version is released.
And you are always welcome to ask for help! 