As always, carefully check the system requirements and supported video/sound cards, etc. of your NLE and effects software - and any software you're thinking of upgrading to. You can usually find this info online.
Be sure and get two harddrives. Both should be SATA drives, not IDE. The smaller drive (if not same size) should be used for OS and programs, the larger for video files. Even better, for some programs, is to have a third drive for scratch disks and temp files.
Enjoy the new computer!
PS - All Canadians must learn French. Are you saying that in the French-speaking province(s) they do not have to learn English? (Spent two years in Alberta)