I'd consider moving the SPY-1K faces to a single structure. This will reduce the back-end equipment costs, which right now is duplicated between the fore and aft faces.
Nice start.
I agree in principle but I'm a bit leery for a few reasons
1. If I go the Nansen route with a SPY mast, I get a better radar horizon, but I'd be really questioning the top-weight issues.
2. Duplicated back-end equipment is redundant back-end equipment. I might be chasing a wild goose with this line of thought, but even if something big and not easily repairable failed I'd rather have one radar hemisphere still operational.
3. I like the look of it. This is a really weak argument and personal design taste means very little when designing a combat system, but it's just sleek looking to my eye.
If you have some really pressing point that I'm missing (maybe duplicating the system would make the ship unaffordable to small countries it's aimed at?) I'd strongly consider it.