318 Engine Build help

Here's what I have so far:
Block was .030 over, bore looks good, so I'm going with that for now.
Magnum Heads 5 angle valve job
Dougs Headers
Went with a Comp Cams 284H Nostalgia Cam 239/246 @ .050, .516 lift with 1.6 arms (think it might be too much, but we'll see)
.028" Head Gaskets
Holley 650 DP
Hughes adjustable oil-through pushrods
3500 stall converter
Reverse Valve body racing trans

Still need:
Intake (Air Gap)
Chrome ignition module
8 3/4 rear 3.91 or 4.10 SG

What do you all think?