Another Holley jet question.

At sealevel you might be looking at Primary MJs of 66/68s. allowing two numbers per 1000 ft is 58s.
The Secondary side could be about 6 to 8 numbers bigger.
But If I was working on that beast, I would probably start with a 10.5PV; it will roll into the power so much nicer.
You might as well assemble a small collection of tuning parts cuz at 4700 ft you'll probably need them.
But like the previous poster sorta says; run whatcha brung.