Proposed a filter, carb setup

I did look for a spread bore intake.
Limited opinions

Speed master spread bore only good
To 5500
Edelbrock, if I remember, Sticker shock

A friend of mine is a great aluminum welder,

I'm thinking a used Speed Master Chinese Edelbrock knock off
That he modifies for spread bore

at this point I can't get the hood closed with the air filter housing, TQ adapter, nitrous plate, gaskets

No, I'm not ready to cut the hood yet
You're friend could hook you up with individual nozzles for your nitrous system in the runners. That gets rid of that spacer.
Run a 4150 carb , that gets rid of the other spacer.
Also ask your buddy to Make that factory air cleaner housing into a drop base. After you figure out your linkage and throttle cable.
Hot rodding with stuff you want that doesn't work usually requires alot of modifications and fabrication.
making it work ...that's when you're hot rodding.
I know this from experience as I love doing things that people doubt can be done.
If you lived next door I'd gladly help you out