No. The crumbtray height is always the zero point for the GF. When you remove it the zero point would be, in your case, 1.3885" above the bare floor of the GF because that is how tall the crumbtray was. So, since you have stacked a total height of 1.630" off of the bare floor you just need to determine how much higher that is above the original crumbtray height. Pretty simple. 1.630" minus 1.3885" which equals 0.241". That is 0.241" above where the top of the crumbtray would have been. So, 0.241" is what should be entered in the material height selection. Don’t enter anything in the focus height. Adjusting focus height is an advanced technique that you will discover much later.
Also, keep in mind that no material height entry may be higher than 0.5" above the original crumbtray top, or lower than 0.01" So if you end up with a number that is lower than 0.01" or larger than 0.5" you will need to adjust your risers to fall within that range.