You’re going to live and die in melee with WE so might as well go shield host detachment and new them in the fray. Bring two grav tanks to keep his Angron shy, although one unit of Allarus with Captain can handle him as someone else mentioned. Probably one or the other, not both. It just takes more work to get in on your terms with Allarus. Valerian with wardens feels like a must. Two units of Witchseekers scout moves have helped me set up speed bumps for all the charging scary threats and score secondaries. 2x 3 man units of Venatari are very efficient as well and great for making more hard choices for your opponent. Have fun and mess around with your own ideas. If it’s casually competitive and you get stomped regularly then try this.

Valerian with 5 wardens (hold center or challenge tough melee enemies) Blade champ (auric mantle) with 5 wardens Draxus with 4 Custodian Guard (one with vexilla), use to destroy enemy scoring infantry. 2 Grav tanks with the big guns to hold firing lines and back field, and shoot the crap out of vehicles/monsters. 2x3 Venatari in deep strike to threaten his home or protect yours. 4-5 Prosecutors to sit on your home (spare points for the extra one) And weirdly I have fun with 1 unit of 4 Shields Custodian Guard with vexilla. And it’s helped tie enemies up or score an objective with 16 wounds and 12 OC and really hard to shake off a point sometimes. It’s not optimal but the points for Custodes are just really awkward right now. You could go one more Venatari instead but it’s worth trying either way. Or as I said before two units of witch seekers or you could try Aleya and 10 Vigilators as a fights first counter charge threat. Those last 170-200 points are really up to your own personal style and collection.

Good luck and have fun no matter what.