What fps should i be expecting?

[incrediboy729]

Hello.
I have a few questions, but first let me give my setup in my Classic Army m4. I either have these parts installed or have them ordered on the way.

Elite 12v mini battery with deans
G&P m160 motor
G&G Hyper Torque helical gears
King Arms m150 spring
Prometheus POM NEO piston head
ARES Double O-ring Cylinder head
Systema Area 1000 spring guide
Classic Army Tightbore
Systema Hopup bucking

What is the fps i should be expecting? I know it should be somewhere between 480 to 520fps, i think, but i would like another opinion besides mine.
I am a plinker not a gamer, so i know i am going to be geting way over a field limit's fps rule.
Also, should i get a bore up cylinder? I have heard they are good for fps's over an m130, but then i have also heard they are only good if you have a long barrel.
Thank you for your help.
-Brett