The front is 1/4" wider each side than rear when at stock height, this changes when lowered or raised by going out or in. Wheel spacers are fine and I run BORA brand 1.25" on my rear to even up with front.
For your stock wheels I would run some 1.5" spacers and don't trim the numbs off. The numbs can fit inside recessed area on wheels. If you do 1" spacers you will be cutting into the middle of the threads. Max smallest spacer to run is 1.25" and that is at the edge of threads. Also your angles look really maxed! Some lift companies say to cut droop but not ones that are maxed over stock range. You need lift UCAs if your going to keep it that high or at 2.5". I would drop back down to 2.5" to save life on LCAs and CVs.