for editing and postprocessing dv a gaming or even a workstation videocard wont quite cut it if youre wanting to postprocess it in real time you should desire a "Matrox RT.X100 XTreme Pro" in addittion to the 3dlabs... (or whatever main videocard what matters is having a dedicated hardware card for VIDEOEDITING and yes it has to be a dedicated subsystem as both the gaming and workstation cards DONT have those habilitys as they dont target that area specifically)

https://www.azken.com/privado/PorCate...&idcategoria=6
those guys make edition workstations that you can take as your target system for video edition and post processing

One of those wont hurt also:
Canon XL2
Sony DCR-VX2100
JVC GR-HD1
Panasonic AG-DVX100/200

If you live in or near a major city it shouldnt be hard to find a production facility that rents any of that to you... if you manage to sell the end product then think about buyng the hard... the cam+a superworkstation for both 3d and editing+manuals on filmaking and 3d+some production money and the time it will take you to master some techniques is inicidentally more or less about the price and time of the education on that area on a private school so consider it an option...

cool video demonstrating what a render layer is: https://www.cgnetworks.com/story_cust...?story_id=2538
on the right... the last one where it says "watch render layers"