What is the length of the coilover springs??

[NoHachi]

Its difficult to calculate or check whether you are getting coilbind.
Coilover springs are usually only rated between 60-90% of their length, you want to make sure that all of your handling loads fall inside that range.
Coilbind is then only used to determine where your bumpstops need to engage.

Easier to just measure the TRD spring for the guy
from experience I would say that the fronts would have to be a minimum of 8 inches long with 9 inch rears. If you dont intend to build a trailer queen then you might want to add an inch to those numbers otherwise you end up with a range of adjustment between slammed and scraping the ground
People running 200mm springs require 7kg/mm rear springs to keep them in spec range.