Use either TSS or Poulin as a boost, not both of them.
And christ, unless your pickup are super low output, you do not need to have the gain that high on 7170. If you want the Meshuggah sound, it's not about buckets of gain, it's about having an appropriate amount and having picking technique of the gods.
Hell the style of music I play is even more high gain then Meshuggah, and I have yet to be able to use more than about 40 per cent gain on 8505 or 7170 before it's just too much.
Also, seriously, get rid of the Waves garbage. It will not make you a better engineer. Get the source material as good as possible and chances are you can get a good mix (with some skill and knowledge of course) using just the plug ins that come with your DAW and the free plug ins that are available.
Learn to work with a minimal of tools, because if you try to over complicate things before you really nail the fundamental skills, you're just fucking yourself in the ass.