Crank It Up: Slash's Tone on the Marshall SV20H

Trying out some cabs from CelestionSpeakerMix and seeing if I can go for that Appetite for Destruction tone.. It's been said that Slash used a modded SuperTremolo 1959 on that album, so the SV20 should at least get the tone in the ballpark...
I'm using a Gibson LP Standard and boosting the amp with a little bit of drive from an EarthQuaker Plumes OD.
Reverb and Delay are from STL tones.