Altitude Adjustment- Jet size for lower altitude help please?

[396C-10]

Having moved from Wyoming to Mississippi, my truck runs like crap. I removed the jets and I need some idea of replacement jets and other adjustments I will need to make to make it run like a sewing machine.
Here is what I have going on.
I moved from 8000 ft altitude to 200 ft altitude. I have a 1967 Chevy C-10 with a 70 Chevelle 396 Big Block, bone stock build, no racing cam or anything special. Running a Holley 0-3310S 750CFM 4bbl Carb. I removed the primary jets which were 72's.

Does anyone know what I should replace them with for this lower altitude? Should I also consider replacing the spray nozzles?
Would I need to do the same with the secondaries?

Any advice would be greatly appreciated, and thank you in advance. I must admit, I am not a carburetor guy. I was told buy an old timer once, if you don't know a Holley, leave it the "F" alone... I did not listen.