Need cam ideas for my 318 Duster

You said

Yur gonna need ~350 hp with a Superstock chassis.
With a street chassis, that will be about a second slower.
Thus you will need the equivalent of a 100shot of Nitrous on top of the 350.
Hmm, not what I wanted to hear lol. Well, I do actually have a complete used nitrous system that I've never used...
As for you
Good luck getting enough cylinder pressure for that size of cam. and if you don't have the pressure, she'll be a lousy DD
I did a quick study, and and for that 235* cam, say with an Ica of just 66*, to get to 190psi will require, an Scr of 11.7
In a 318@20 over, that comes to a total chamber volume of 61.6cc With a zero deck and 5cc eyebrows and a Fell-pro 039@ 8.6cc, that means your head chambers have to be down at 48cc or less. IIRC the Edelbrocks come to you at 63cc. You see the problem?
And that is a two edged sword. If you cut the heads down, you may have to cut the eyebrows for more clearance, and the intake will have to be cut, and maybe the chinawalls.
You said;
Getting enough CP is the challenge. I know. 63cc is what they say, but I haven't measured them so can't say for sure.
Wallace calculator doesn't fully agree with yours, or do I miss something? With this:

HUG STL3842AS-8​

Hughes cam I get 186.8 PSI with 9.6:1. Or I'm I lost in the math?
Hughes Engines

and you said

IMO my advice is to lower your expectations.
Those 4.88s are lousy for a DD.
Those 3.91s with 28s, are 65= 3100 at zero-slip, say
3150@ 3% slip , but, how many DD miles can you get out of 28" street slicks?

IMO, with your stated goals, yur gonna have to give something up, especially being in Sweden; unless it's like 10 minutes to work.
I have started to lower them already. And thinking of adding that nitrous system LOL.