Good call on the heads! I think you’ll have a compression ration closer to 9.2:1 given the following:
Bore = 4.030
Stroke = 3.48
Head gasket bore diameter = 4.166 (Fel-Pro Q1003)
Head gasket thickness = .041
Combustion chamber = 64cc
Piston volume = -10
Deck clearance = .025 (based on “average” stock measurement of 9.025”)

If you square the block and have the deck cut to 9.003, CR increases to 9.68:1 with the above - very “streetable” and a good place to be.

I like the cam – be sure to follow the initial lube and break in as modern oils lack zinc.

I still like an Edelbrock Performer RPM with a Quadrajet (750cfm – but note the vast difference in primary and secondary allow this to be a very efficient and yet great performing carb) with this combination however; an Edelbrock 1406 (600cfm, electric choke) would be fine too but plan on coming down one size from the supplied jets and metering rods as they tend to run rich out of the box. Again, remember that Vortec heads use different manifolds and the QJet is a spread bore while the Edelbrock is a square carb. Get a big air cleaner – Summit SUM-G3001is perfect for $22. 14” x 3”. Resist the temptation to go a small, sexy air cleaner. Remember your engine is an “air-pump” and needs to flow as open as possible.

Stock HEI distributor is fine. Start with 8-10 degrees initial and 32 degrees total on timing.

Headers are a must – I like Hookers, but any name brand should work well. I also like ceramic coating on the headers. It looks real good, helps with the heat and you’ll not have to worry about rust. Go with stainless steel header bolts – trust me on this. Have 2-1/2 inch pipe done at a muffler shop and install a cross over pipe with 40 series Flowmasters – you’ll love the sound. With the QJet, you’ll hear a real freight train and get a great kick when you hit the pedal at about 30MPH

Have Fun,
Glenn