the 7022 is the same height as a classic or krl722. With a hutch, and if you are over 5'6", you are going to hate smashing your head on it. these boxes are just short enough, that with a top box you can get in the top without a ladder.
since you are planning on a hutch, I would get the 1022, or 1023, 1033, 1032. . if you are dead set on the double bank, get the KTL1022. it has three wide drawers. that seems to be the normal for people going with hutches. I'm 5;9" and would not want a 7022 with a hutch.
I wish I would have went 1023 when I bought my 1022..... buy once, cry once. don't be a dweeb and buy 5 times. lol