that's correct, the fronts are slightly taller than the rear.
You get more lift than the actual height of the spacers due to the motion ratio of the suspension (length relationship between the pivot point of the control arm on the chassis, the lower strut mount, and the lower ball joint)
For the front, this means that your lift will be about 1.55 times the height of the spacer. The spacer is about 1.625" so multiply that by 1.55 and you should get around 2.5" of lift not counting what you get from larger tires. In the rear the motion ratio is different so you get a little less lift, so with the slightly shorter spacer you'll pretty much be level with both sets of spacers installed.