Well, lower gear ratio for 2 to what ever gear yes, first gear ratio should be a little bit longer so the tires dont spin. On 4wd cars, im nor sure about the springs, but i usually run soft springs and dampers, and ride height is a little bit higher in he back. It works well for me, but i dont know if its the correct way.
1st: as long as possible
2nd: very short
3rd: a bit longer then 2nd
4th: a bit longer then 3rd
5th: halfway between 4th and 6th
6th: adjust to trap speed
1st: as long as possible
2nd: very short
3rd: a bit longer then 2nd
4th: a bit longer then 3rd
5th: halfway between 4th and 6th
6th: adjust to trap speed