Looking at placing my order, but i am interesting into the memory cards/ CF people are using?

Can i used say a "SanDisk Extreme PRO Compact Flash - 32GB (90MB/sec) 600X" with a "SanDisk Extreme PRO SDXC Card UHS-1 - 64GB (95MB/sec) 633x" at the same time or do they need to be the same amount of GB ( i know one will hold more than the other).

Or do you need the sony card? and will normal SD cards still work ?

Im just a bit overwhelmed by the memory choices and the change, and also about getting new things

Also hows the battery going, have people been using the add-on pack?

Thanks in advance.