Ride height questions 4th gen

Hey guys, just trying to figure out whats going on and what to expect. 2006 v8

I am changing my rear coils as I believe they are completely shot, with moog coils and bilstien 5100 struts. I plan to run at stockish height.
Front suspention is 1year old coil over kyb gas a just shocks.

Coming to my question/concern. Right now when i measure ground to fender i am getting 35.5" and 36" at the back(full gas tank bringing the one side down .5" i believe) and at the front i am at 34.5" on both sides.. this is with what i believe are completely worn out rear springs and likley because of that blown kyb gforce struts.

When i replace both in the rear will the ride height in the front be another inch lower.. what should i be expecting or how to rectify this.. or will these so called gas a just shocks compensate...
Thanks for any help.

 

Im wondering if the kyb gas-a-just coilovers arent equipt with a heavy enough spring for the heavier v8 engine.