Layout advice

[Sarduk]

I know there is a thread somewhere posted by a user in the same position as me, but it was quite some time ago and I have gone back 7 pages and cannot find it, so I hope you don't mind the repost.

I have the following drive arrangement:

All SATA:

2 x 320GB Western Digital AAKS in a RAID0 array on a ATAPEC controller (PCIe).
1 x 250GB Maxtor... something (7200rpm, decent drive) on the motherboard controller
1 x 500GB External

What is going to be the best partitioning layout?

- I have a big music collection (20GB) that I access frequently and a lot of AVI videos (200GB+) that I access infrequently
- I need to store Virtiual machine images somewhere
- I have 4GB of RAM

I was thinking;

1) Partition the 2z320GB RAID into:
- - 200GB Windows, apps and documents
- - 250 GB 'space'
- - 50GB music
- - 100GB VMs

2) Partition the 1x250GB into:
- - 2GB for page file
- - 200GB video
- - 48GB encrypted drive (private stuff)

3) 500GB external for backups

Thoughts? Thanks