If it's bigger than Saurva, I'd say it's too big already, tbh. In fact, Saurva is already on the big side and that almost got the walls underneath the pads. The bigger the courtyard, the longer the walls, the harder to defend.
Any chance it will be sank a bit deeper into the swamp?
An adaption of something like this?
And were you going to try and place the teleporters inside the courtyard as suggested before? (Possibly with control points for both ends?).