Pappasa,
I love your Khorne list. I ran World Eaters last year and I had a blast.
By the way, note that with the FAQ that came out in late 2018, lasher Maulerfiends went down in price. They are now 120 points base and with a single set of lasher tendrils at 12 they go to 132 not the 144 you had listed. The wording in the Dex is not entirely clear but most Chaos players read it as 1 set of tendrils replaces the 2 magma cutters. Assault units this edition need all the help they can get this edition!
Hopefully my Maulerfiend, Mary, can meet your Maulerfiends at OFCC in August. I'm on Team Infil-traitors. I'll also be running 1 or 2 Blood Slaughterers. I love those little dudes.