Quick note- unless I misunderstand your list you only need 3 units of Warriors. A unit in a Dedicated Transport only counts as one unit for this purpose. (p. 124) So your two units of Lychguards are 2 choices, the Overlord and Court are another choice. (Or maybe 2 more choices, don't have the Necron book so not sure on that front.)
Anyway, you have 3, or at most 4 units in Reserve for the purposes of the 50% rule, not 6.
Units that have to start in reserves(Flyers or Drop Pods) do not count toward that 50% limit. Also, units embarked in transports that are required to be in reserves also don't count. Seems like Necrons are the new all reserve army.
Evil is like shadow. It hides in the tiny cracks, biding its time until the Light fades.