If you can capture the DV format you can capture the HDV format because, by design, HDV has a similar data rate to DV. I think you should be able to capture DVCProHD at 720p/24 but I don't know for sure.
The laptop will be adequate for editing, just don't expect very much in the way of real time effects and your render time is going to suck (especially w/HDV).
Lethal