Need big block help.

I have a `74 cast crank low comp 440 in my Duster (Shumacher engine mounts). Here`s what`s been done and the plan moving forward: .030 overbore with Mopar Performance piston kit, ProParts partial fenderwell headers, MSD ignition, Griffin 29 inch radiator w/ dual fans. Plan: Have a set of 440 Source heads milled to 75cc`s by Hughes Engines with port work (not full CNC) by Hughes and me. 3 angle valve job also by Hughes. Replacing Weiand single plane and 750 Dominator carb with Eddy RPM Performer dual plane and probably a Mighty Demon or Holley 850 HP square bore carb. Likely going with a Comp or Lunati hydraulic cam kit - strongly considering the Comp 285 with .545 lift. Car has 727 manual valve body, 9 1/2 " 3500 Dynamic converter, 489 casing 8 3/4 inch rear with either 391 or 410 gears going in. 29" MT drag radials on it now, probably stay with those. Any opinions on this plan welcome, particularly carb and cam selection......