[JoeProcopio] “i hate to say it, but if you are going to do any HDV work, and output HDV, then a new 8 core Intel is in your future…”
TOTALY UNTRUE
I edit HDV on a Dual 2.5 G5 all the time and have no problems at all. Your processors are better then mine, but you do need to upgrade your ram.
HDV footage, if captured as HDV takes up no more space then DV footage. If you capture using the Apple Intermediate Codec then it will take up more space.
As with any video editing you should keep the video on a separate drive not on the main system drive.