There are a few flaws in your plan. The Holley Contender intake is a very small Dual plane that would suffocate a decent running 289 so you can imagine what it's going to do on a 347. You need at least 1-3/4 headers on those Pro Comp 210's and a set of shortys will cost you some power and 1-3/4 shortys are very few in selection. The Carb is way too small for a healthy 347. I can tell from your list of parts that you are working on a limited budget so here what I would reccomend for a lot of bang for the buck.
You need to measure the pushrods with the heads on.
Lose the gear drive in favor of a decent chain. You can save a lot of money right there.
Buy a Summit Stage 3 intake.(cheap well made RPM Knockoff) Ebay the contender
Summit 750 CFM carb(it's the best for the buck carb on the market)
TFS Stage 2 Cam (It's cheap, it's aggressive and makes decent power) will be OK with 2000 stall
Get a set of BBK long tube headers (cheapest 1-3/4 long tubes)
Not only will it sound like it's no joke but it will be able to back it up. You will hit the 400 hp mark at the crank. Nothing is really optimal but it will still make gobs of power.
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