Simply put and thank you!!you want to cut an equivalent amount from bump stops that you're dropping the car as measured at the hub-cap, modulo motion-ratio.
Up front it's 1:1 (or close enough) so if you lower by 1" chop the stops by 1". The rear is 0.7 so for 1" drop, cut off 0.7^2 or 0.5".
It's always better to have bump-stops that are too short than too long.
What exactly are you installing?Update: got a quote for $450.00 for install and alignment. I trust the shop and have done business in the past with the guy. Based off everyone’s response to this post and today’s quote, I feel this is going to be the average.