Its mean as hell and hits like a convoy of mack trucks in both the shooting phase and the assault phase, but it is a little on the squishy side for a super heavy that is an absolute must for your opponent to take down. I like your all armor list to go with it, few lists are going to have the anti tank to handle it. although outside of the Scorpion the others arnt too threatening, and might find it difficult to hold objectives/remove enough of your opponents models to hold objectives. Still looks like a fun list, and brutal against an opponent that didn't bring enough anti tank.
In a narrative play event I ran one with my Necrons(they are a ll insect themed, so when choosing a super heavy the scorpion was in by default in the selection process, even in 7th where wraith knights just ate it before it even got to swing) and it really buffs my crons who are mostly shooty (triarch stalkers, insect fly like destroyers, coptek spiders and scarabs, plus some antlike warriors) and I really had fun taking it in 8th where it got so much meaner.