Blaster archon with blasterborn, I don't think needs the webway.
I would drop one grotesque, make another Aberration, and stick them with the hemi in a nightshielded Raider
Now that's something scary with webway.
If you drop them on foot, you won't utilize the liquifer on the hemi (shooting through a grot), but that's not a problem from a transport.
If you bring 2 Ravager, I would leave one of them with 3 disintegrators, anti-
MEQ, anti-
TEQ.
As I see, your list is pretty much against
MEQ in mech.
The Razorwing is good against hordes, but I would use the trueborns with 2 splinter cannons, 7 rifles, and the archon in a raider with nightshield, splinter racks and disintegrator.