Under $4k budget build LA360 build

When I go back to work, my drives will vary between 5 blocks and 35 miles. Dependent on what I’m up to that day. With that said, a fair amount of driving will be done on the highway at 70mph. I was potentially going to build a second 3rd member with bigger gears, but after reading more about how gear ratios work with the engine build, I probably won’t. I like the idea of 3.23’s in theory because they have some balls, but aren’t too much for long highway drives. I need to research this quite a bit more. I’m missing a step or two on how AJ got to where he was with his numbers. Lol.
He's got calculators.
I'll probably be picking his brain myownself.