A larger Type 82 could combine Sea Dart, a hangar, and Ikara

Could Type 82 move Sea Dart aft, add a helicopter hangar, and remove Ikara?

Yes, but a slightly larger ship that kept Ikara as well as Sea Dart and a hangar would be the more useful design.

Moving Sea Dart aft and adding a helicopter hangar could produce a more effective Type 82. Removing Ikara merely to make the arrangement fit would discard a useful anti-submarine capability. A slightly larger hull could place the missile launcher aft of the forward turret while retaining both a hangar and Ikara. The design would preserve complementary missions instead of sacrificing one for a tidier layout.