Why do you have 8 SPY-1s? You only need 4.
Ohh I need eight!
There's some virtue to the idea of two separate SPY-1 installations (on something so already-stupidly-big as this, at least), but the secondary arrays (the forward-facing aft pair and the aft-facing forward pair) probably ought to be SPY-1F or even -1K. They're for casualty-use only, so no reason to ship the full-weight full-cost arrays there.
There can’t be smaller arrays unless it’s a third (or fourth) Aegis system. The eight faces and two Aegis radars are not for degradable capability but for better and quicker detection.
The faces (antennas) of Aegis are not independent units but just the output for a central radar wave generator connected by wave guides. In the case of the Ticos there are two Aegis units (fore and aft) each powering two antennas but in the Burkes only a single unit powering four faces. In the case of the Duke there are two units but each powering four arrays.
The inward facing antennas have a very good field of regard and are only blocked by the superstructure in the straight ahead and aft at level which means low altitude targets. For the rest of the hemisphere there are two Aegis radars covering the sky. Which means they can be used cooperatively providing two radar measurements for better accuracy and quicker air picture generation.
The helipad and hangar also seems pretty small, as well.
Pad could be bigger, hangar definitely needs to be for so many aircraft as that.
The donor hull for this ship is the Alaska class – just lengthened a bit – so its actually very wide. I tried to draw this by having those two helicopters side by side on the landing pad. There would be two landing pads (left and right) and the hangar can store four aircraft side by side in two rows. So it can fit the eight helos shown.
Nuclear powered is it? Otherwise that many systems would not function. The electrical need for this monster, and it's pure guesswork here, can be compared to a city, say like Salisbury?
Nuclear indeed. I redrew it for that central well where the deckhouses can be removed so you can get to the reactor to refuel them. This is something most US Navy nuclear ships has. As to how much power good question?
To drive the ship it would need at least 112 MW (like Alaska) but because of the extra length would be faster or could do with less power. Radars would need around 20 MW and a few more for the hotel load which would be very high for all the air conditioning (for the radars). So maybe 150 MW would be good. Which would be two 75 MW nuclear reactors and 40 knot speed.
Salisbury (now Harare) was powered by the hydro dam on the Zambezi but apparently the first rate Rhodesian electrical system has gone downhill a lot in recent years. The Zimbo side of the Kariba dam generates 750 MW. There is also a 50-100 MW coal burner at Harare.