So after watching some of the review videos on youtube that are already out, here is what I came up with for my Custodes army, only need to buy 1 model (character HQ Valoris) to complete it.
Battalion Detachment 3cp
Valoris - 250 pts
Shield Captain - 122 pts (Guardian Spear)
3x Custodian Guard - 156 pts (Guardian Spear)
3x Custodian Guard - 156 pts (Guardian Spear)
3x Custodian Guard - 156 pts (Guardian Spear)
Comtemptor Dreadnought - 167 (Assault Cannon)
Comtemptor Dreadnought - 167 (Assault Cannon)
Venerable Land Raider - 370 (Hunter Killer Missile)
Venerable Land Raider - 370 (Hunter Killer Missile)
Auxiliary Detachment -1cp
Culexus - 85
Total Points - 1999
Total CP - 5
I think this list is solid and able to fight in all phases of the game it has something for every range of the battle (48", 24", Close Combat) and has improved psychic defense which seems to be this Army's most glaring weakness and well worth the 1cp spent to shore that up.
The land raiders are crucial to stopping negative modifier shenanigans, and comtemptors to put some hurt on most vehicles.