Lowering and raising the front is pretty easy. There is a large bolt on each side,,,,loosen to lower it,,,,tighten to raise the car.
You need to jack the car up ( ie,,,get it off the front tires ),,,, before you start to adjust the bolts,,,,
You might want to measure the front end height first,,,,then you can compare it as you adjust it,,,,,
Not sure what the correct "height specs are"....maybe find some pics of various cars you like,,,,and try and match to that look.
ps,,,,you alignment will likely change as you change the ride height,,,,,ie, after you set the height,,,,you might need to get it aligned.