Brake pedal height question

I have the 73 and up disks on the front, 10.95 rotors with the 2.75 inch diameter caliper pistons and the Dr Diff rear disk brakes on the back.
The master cylinder is the Dr Diff 15/16 piston unit. going from the stock 4 bolt MC to the 2 bolt MC I used the Dr Diff adapter. I also believe that re used the stock MC push rod.

The car stops OK, certainly nothing outstanding, I am considering changing to the 11.75 front rotors and some performance front brake pads, currently the front pads are basic OE parts.
but that is not my question.

It has always seemed to me that the brake pedal height was a bit low in the car. I measured it today and the brake pedal with no pressure on it is 5 to 5.5 inches, measuring from the carpet to the top of the pedal.
Using a lot of hand - arm pressure on the brake pedal and again measuring from the carpet to the top of the brake pedal I get 2 to 2.5 inches.

I know that putting all the foot pressure that I can muster, I cannot get the brake pedal to bottom out on the carpet-floor, which is good.

So is a brake pedal travel of 2 to 3 inches sound right? And does a free height of 5 to 5.5 inches sound right?
I have aftermarket seats in the car, so perhaps to get the brake pedal where I want, I should raise the brake pedal pad.
just asking to see if these measurements are typical and sound right.

Thanks