Lifeson's tone on Grace Under Pressure

I've been learning some songs from this album (Distant Early Warning and Red Sector A) to maybe record a cover later on but I can't nail the tone using modeling software (I'm using BIAS FX) since I'm a total idiot when it comes to chaining effects. I know he's definitely using a Chorus, Reverb and Delay and some other stuff in the mix but I haven't found any good info online as to what his rig was back in that day (only vague stuff). Any Lerxst fans here have more insight on his mid 80's tone?
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-- David St. Hubbins.
That's like 6 different delays, how much tonal variety can you get from different units?
The basic idea is chorus and delay on the front of the amp. Maybe a light OD pedal at the beginning of the chain, and some reverb at the end.
I've seen live videos of the song and the tone is much more overdriven, in that case the values on the effects should be pretty low, because the amp distortion is going to compress the sound and the effects will be louder in the overall sound.
I also use Bias (now Bias 2) and I really like it. I'd say find an Andy Summers preset and tweak it, although factory presets can be totally useless.
I'll link some videos about the Walking on the moon tone (by Tim Pierce), about running delay in the front of a dirty amp (Pete Thorn) and another video by an old teacher of mine about 80s guitar tone, this last video is in Spanish.