That one will not work,if they tassel at the same time. They will cross, the popcorn won't pop properly, and the sweet corn will be more starchy. That said you can plant different varieties of sweet corn together as long as they are similar types. Supersweets (SH2) must be isolated, or eating quality deteriorates severely. Unless you have a farm, it is easier to isolate in time rather than distance. It is wind pollinated, and the pollen can ride the wind for 50 yards or more.