level and spacer question

[Reit38]

truck is already leveled to factory rear blocks now. added 285/70/17s the other day and wanting to bring tires
out to fender flares. i know if i crank more it will bring my tires in farther? i dont want to order 2in if i only need 1.5 spacers

im also thinking of cranking the front a bit more to give it a little cali.

running stock wheels if i matter

what would the back need to bring to out to fender flare?

truck is storage so i cant run out and do any measuring