golden tee cabinet with wg k7500 monitor

[maddags]

Sorry ahead of time if this is on the wrong forum.

I have a working golden tee 04 cabinet with wg k7500 med resolution monitor.  I have just bought ArcadeVGA , would i need to use the voltage boost cable, or could i just use the vga breakout cable. And I am also using there trysnc software to output to 25khz.

Sorry one more question.
I would like to keep the golden tee board and run mame as well.  From what i can figure out is that i am going to use pacth cables for the quick swaps of the control panel which i have wired up already, and do the same for the monitor inputs as well.  My question is that i would like to power down the pcb and hard drive until i want to use them. could i just discontect the baord and hard drive from the power supply, I have tried to power off the happ controls power pro 200 P/n 80-0002-10 but it also shuts down the the power to the marque.
Any help would be greatly appriciated.