I think your combo works well but you will have to up the cam to gain significant power and or have the heads fully ported. The .590 isn't 265 it's 271 dur at .050 and it is lumpy. Mick
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200# best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft best 60ft 1.36