Here's a few more BlackMagic Pocket Cinema Camera related tidbits of information. If you're looking for another inexpensive option for SDHC media, the Transcend 16GB/32GB SDHC 600X UHS-I (found here) / or the the Transcend 64GB/128GB SDHC 600X UHS-I (found here) media seems to work.
Transcend 16GB/32GB SDHC 600X UHS-I
Transcend 64GB/128GB SDXC 600X UHS-I
If there is one single lens to choose for the BMPC, I would have to go with the Sigma 18-35mm F/1.8 lens. This lens can maintain that constant F/1.8 aperture through it's focal range crowning it as the 'World's Fastest Zoom Lens'. It's obvious why this lens has been on constant backorder since it's release.
Sigma 18-35mm F/1.8 - B&H
Sigma 18-35mm F/1.8 Canon - Amazon (in stock)
The Sigma 18-35mm is available to fit a variety of cameras, but unfortunately it's not available in a direct MFT (micro-four thirds) mount. So to control the aperture you'll have to look into something like the Redrock Micro LiveLens MFT Active Lens Mount.
Without power, it's a high quality EF to MFT lens adapter to be used with manual lenses, but when powered up it can control the aperture settings in any electronic EF Lens. A must have for anyone who shoots with Canon EF lenses on MFT cameras like the BlackMagic Pocket Cinema Camera, MFT Cinema Camera, or even the popular Panasonic #GH3 (currently on sale).