XP 64 bit

I’m thinkin of upgrading my pc to windows XP 64 as I have recently built up a 64 bit system with 8GB ram .

XP pro 32 will only utilise 4GB ram as we all know !

So just wondering if you’ve had any problems with software running on XP 64 .

Software I use :

Cubase SX 3
Kontakt 2
Battery 2
Nexus
Vanguard
Rob papen Blue , Albino & Predator
Zeta

Hardware :

Radium 49 Midi Keyboard
Audiophile 24/96

Any probs with the above you’ve experienced ?

And should I go XP 64 ?

Cheers