Winchester and Enermax 465P-VE

I am currently running this setup:
Barton 2500+ @ 2456mhz 1.85 vcore (mobo overvolts up to 1.87)
Asus a7n8x deluxe 2.0
2x crucial 512mb CL3 @2/2/2.5/11
Fortissimo III 7.1 PCI soundcard
Fan controller unit with 3x80mm and 192mm fan all at 5 volts
Point of View 6800 GT@ 425/1100
2x UV aktive kathodes

CPU and GPU are watercooled. The pump is not connected to the PSU.

All this is powered by the enermax 465P-VE. It's rails are rock solid and i modded the PSU to 7V 120mm fan so it'S nice and quiet.
The PSU is quite old so i'll give you7 the info on it:
3.3 +5v: 220MAX
Total Power = 431W
3.3v: 38A
5v: 44A
12V: 20A

Now i read that an overclocked winchester is going down with anntec 400W PSUs wich seem quite similar to what i have here!
Shouldn't my enermax be stable with an OC winchester. The OCed winchester uses less power than my barton at that clock and vcore!
I'm only worried about the 12V rails since the barton takes quite some juice form the 5v rail i think. Will the winchester make my 12v rail struggle?

I really hope i don't have to part with this great PSU especially after the 120mm mod i did.