You can use a WiMo or Neo wifi remote AC switch to activate a normally open relay that will do the job. These devices have iPad, iPhone and perhaps Android applications that control the relays.
The NEO is about $23 US on Amazon. There is an AC switched relay on Amazon for about $8.95 that is already in a case with AC leads and screw terminals for the relay contacts.
So for $30 US you can have a working remote power on/off for your 6000.
I have posted the links in another post. I will try to repost them when I get near my regular computer.
If you want to remotely control your power supply, top, get another NEO or WiMo and use that to control the PS.
Some ops use a third one to power off their shack computer if needed for other functions like antenna rotor or amplifier control.
I remote from all over the world for a good part of the year.
I use 3 WEMO remote switches.
1. Power to Computer (Computer set to auto boot on power on)
2. Power to DC Supply (12V to all station peripherals)
3. Remote on/off switch to 6700
I control the WEMO from an iPad/iPhone App
Has worked flawlessly for at least 3 years now.
Total investment under $100
No need to try anything complicated