Hey I'm running a RG7321 through a Peavey Vypyr 75 I have a Boss DS-1 if needed and I can't seem to find the right tone for the following songs could someone help me?

Sweet Child O Mine-GNR
Stairway- Led Zepplin
probably the ds-1
its horrible
Fender MIA Strat w/EMG SA's
Fender Super 60
Boss RT-20 Rotary Sim
Ibanez AD-9 Analog Delay
EHX Big Muff

"Doctor Kindly Tell Your Wife
That I'm Alive, Flowers Thrive
Realise, Realise, Realise"
for the Metallica song, I use a little bit of Chorus, and slight Delay. And some Chorus in the distortion really helps fill out the sound too. Hope that helps
I'm FAT!