I think both lists are pretty solid but I'd make a couple small tweaks. On the first list I would drop the blast pistol and upgrade the base haemonculus to Urien, he's just so good for the extra 9 points. Also, since the Archons don't really have a transport I would split one of the warrior squads into 2 5 man's, it gives you the versatility to put all your Archons in a raider to get them up field quickly or run them on foot and have the same setup as normal. And being able to split a unit for objectives is good too.
Second list I don't think the Dark Lance's on the warriors is worth it right now. Unless you play in a very high toughness/armor meta I'd say take splinter cannons instead. If you drop the 4 Dark Lance's for Cannons and the blast pistol you can bump up the Mandrakes to 8. I like the grotesques in raiders, but saving the points and letting them run up the field with toughness 6, 4++ with urien is good too. Just depends how you like to use them.