Help choosing rear end parts

[Dleslie212]

I’m a week or two away from pulling the trigger on ordering these parts, but now I’m having doubts about the 3.73 gears. I’d rather not have to regear the front, but I also want to do the rear correctly the first time

I running a 350, 700r4 and 35” tires. I’ve read that I should be using a higher gear ratio... anybody have any thoughts on what I should do?