Could you tell me specifically what you want out of the reactor?
Also what transfer mods are you using cause that makes a lot of difference actually. if you have a fluid moving mod that allows you to have higher priority on the heat exchangers used for superheated steam we could probably use your 7 efficiency design to an even higher efficiency than the one above. Then you use 800 heat for superheated steam and you send the rest to stirling generators. in that case your rod configuration would produce 648 eu/tick at an efficiency of 40,5.