(warning: lengthy lecture ahead. No offense is intended)
I strongly believe this army is exceptionally foolish. It's a Necron take on a Drop-Pod type army without understanding the differences between Necron and SM or what lets Drop-Pod armies work.
Any army that relies this heavily on the reserve table MUST be able to guarantee against bad rolls for reserves, be it through IG Master of the Fleet (or whatever on it is), the Drop Pod special rule, whatever. Barring that, the army must be comprised of units which function as effectively alone, without support, as they do surrounded by support (for example, SM Tactical Squads).
Necrons cannot manipulate the reserve table, and our units do not function at peak efficiency independent. For example, say on turn 2 your reserve roll nets you 1 unit of Destroyers and 1 unit of Warriors. You now have 380 pts facing 2000. Your opponent will wisely focus all fire on one of those two units, lets say the Destroyers. All 4 Destroyers fall. You have just lost 4 Necron Destroyers with no chance of WBB.
The greatest strength of a Necron army is our durability. Our durability is derived from our WBB. This army makes a massive, and in my opinion, foolish gamble with our greatest asset.