Mokey is about $11,000 usd for a floating license. You could have an effects house do the shot for less and use your free time and saved money on your other shots.
Like beenyweenis said
If your hard drive is fat32 ie a mac or older pc or even if its just a fat32 partition drive for compatability then that could be the problem.
Fat32 has a 4gig file size restriction. And that would be somewhere around 67%.
you could also precompose the backround and all the elements you want stuck to it and then pan/zoom etc on the single layer of fully composited footage.
You can render footage out of poser and bring that footage into AE for post processing. Poser is not your best choice for this kind of 3D. You might want to look into Cinema 4D, Maya, 3ds Max, Blender or XSI.
if you are shooting with an hvx200 you can use Raylight to drag and drop the mxf files directly into Premiere Pro or you can convert them to avis that you can bring into AE and convert to any codec. Before Raylight added support for dragging MXF files into PP. I used to just convert them to uncompressed avi from the Raylight avis so I could share them more universally with people who don’t use Raylight.