A couple of quick ones:
1) Tractive want that controller at the mid-point between the front and rear axles. Mounting in the engine bay will not accomplish that - good decision.
2) You might want to rotate those front dampers - the suspension is currently at full-droop, and those banjo fittings are already rather close to the central frame member. I'd rather have a bit of contact at full droop, which involves forces associated with the mass of the suspension/wheel components. As currently positioned, if contact is made under full *bump*, the forces will be much higher, and effectively bottom the suspension on the loaded corner. That will cause infinite spring rate, overload the loaded tire, and result in an immediate under-steer situation. There's no easy choice on the packaging, since those fittings are located in a poor position for the CSR.
Cheers,
-Bruce
Beachman Racing
Authorized Caterham Cars dealer