Hello,
My suggestion would be to hit EE first, get a FastPass, and if there is no line, give it a quick ride; then head over to KS and ride it. This works best if you are there early in the day. If you are there later in the day, you should still try for the EE FP, but you probably won't get to ride it right then and there. Then head over to KS, and unless it's a peak time, it shouldn't be too bad, especially later in the day.
Hope that helps,
Take care,
Bill