competitive list, c&c please

it's a spearhead detachment as i think this is chaos marine's strong point currently. 1995/2000 points. 104 power level if that matters to anyone

typhus 164 points

plague marine squad x10, a plasma gun and a blight launcher 237 points plague marine squad x10, a single plasma 223 points both marine squads are in rhinos, 72 points each

a defiler with battle cannon, claws, reaper autocannon, and a scourge 246 points x2 forgefiends with hades autocannons and daemonic jaws 193 points each a havoc squad with 3 lascannons and a missile launcher 165 points x2 heldrakes with baleflamers 215 points each.

any advice is appreciated, my head is still in 7th so i tend to build with that in mind and it needs to change, also with typhus having his rerolls to death guard can i give the daemon engines death guard for that or no? they can take the legion keyword but i've been told they can not be death guard so if someone can point that out to me that'd be great. also feel free to give me tips for chaos in 8th, struggling to deal with some of the new rules and nuances.