A question about the pad size?

Have a question about the pad size?

I am new about Cadence design. And now, I am making a footprint for a part. The pdf file shows you the min/average/max of each pin. 

when you make a footprint, which number are you going to use? I know the bigger pad the better, but I still want to run tace between pins.

For example,e1 could be 8.20-0.55 =7.65mm or also could be 7.40-0.95=6.45mm. that makes a lot of different about the footprint~~

all also each pin width, should I use0.22 or 0.38 or ?  

Thanks