Starting a TQ rebuild - tips and tricks?

I am not carb competent. In fact, carbs = kryptonite in my world. So far in life I rebuilt the Holley 1920 on my Valiant and that's it. That adventure was successful but I know I'm heading into far more complicated and uncharted territory.

My 72 Coronet wagon is a dead stock 318 2- barrel. I'm converting to 4-barrel and want to go through the carb before doing the install. I have a 72 Factory TQ intake, 72 340 HP exhaust manifolds (it will get dual exhaust), Speedmaster heads, and all the kickdown parts. I'll be doing a better cam (that will be another thread) with a new double timing set but that will be down the road while I work on the above parts. The goal is a nice cruiser, I'm not trying to make a monster out of this.

I have this 6139S carb, and this rebuild kit.

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Obviously the carb is used, but it looks to be in nice condition. It's clean, everything moves OK, and I don't feel any slop in anything. I have the FSM for this car, and will also be using this book for the rebuild.

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I am soliciting any help from the group before I dive into this. I know I'm going WAY above my skillset giving this a shot. Any hints, tips, tricks, additional reference material, or "don't do that" info will be warmly welcomed.

TIA!!