68 Dodge Dart with 440 Cooling recommendation

71 duster, 426 low deck, 383 with 440 crank. 525 hp. Solid cam 32 total timing in by 3000 rpm. 22" smiths aluminum rad, 3" tanks with small shroud. Aluminum heads and intake and water pump 18" nylon 90 degree mechanical fan. Flo-kooler high flow pump, 180 high flow T stat, 1 bottle water wetter. Car runs 185 in traffic, i can watch the stat open and close on the gauge. drops to 175, goes to 185 opens etc.