CEAFAR has weight in an elevated position, not additional total weight - due to a lot of the electronics being located immediately behind the antennas. This has been the main issue with integrating it into the Type 26 design. The additional volume available in the T26 hull (8,800t V 7.000 for Navantia) is such that BAES is confident that it can build the high capacity AWD with minimal changes.
The Navantia F110 design is more limiting and would require a huge amount of design work - why do that when it has already been done for a superior platform? I seriously doubt that a seaworthy version of the F110 could be built with 96 VLS without removing a lot of other essential capability, the hull size is too limiting.