You should totally do it! Either you found that website via one of my pins, or great minds think alike because I discovered that site about 3 weeks ago when I was looking for options for making my own washer/dryer pedastal. I love my front loading washer, but I hate that I have to crouch down so far to empty & load it. I wasn't willing to dish out the extra $80 to buy a pedastal when I bought the washer, and I found this cute thing on that website that you linked below.
I'm kind of hoping I'll be able to make it out of mostly reclaimed wood. I have some old 4x4 pieces from fence repairs that I'm going to see if they are in good shape. If I can get enough 2x4s out of the pallets I picked up from school, I may be able to get away with just needing to buy plywood and trim. This is my big project for June. I'm hoping it only takes me about a week to get it done. I may get your help for the miter cuts on the trim, though.
Anyhoo, I don't think you're crazy. Unless maybe I'm also crazy. Which is possible.
Love, Heather