System Temperature....

First time poster.. Long time reader...

So, I finally did a full overhaul of my system...

Giga-byte 7N400 Pro
AMD Athlon 2500+ Barton
CoolMaster Aero 7+ ($24.95 @ Local Shop)
Artic Ceramique
CoolMaster 80mm Neon Fan TLF-R82
Vantec 80mm Stealth SF8025L
80mm Case fan (came with case)
EnerMax Case w/ 350PS EnerMax

CoolMaster Neon on the side sucking in
Stealth on the top sucking in
80mm on the back blowing out.

My stats.. idle / load
System 39'C / 30-41'C
CPU 49-50'C / 53-55'C

This is with the barton OC'd to 3200+ (2.2g) (11x200fsb)
I feel that temp is a little on the high side, even when adding the extra two fans today, my temps didnt go down much if any... I think they really when down cause I didnt properly apply the stock paste that came with the Aero. I bought the artic silver and took a very long process of cleaning and applying. I even took my MB back out of the case so I can causiously put the HSF back on without smearing.

So, is this temp ok? or is it running a bit high? help me out.. also, i need some suggestions on better fan placement and direction.

Many thanks appreciated.