@Hakan: That's exactly the info I needed. That's not going to cut it.
@Mark: I used to have a half rack....gave it away years ago. Then got this beast. So yes, that's an option I considered. I need to figure out how many -U's I need (vertical size).
It's hard to find racks around here though. Everything is melamine and plastic casters, or 2 post with tiny casters. Or no wheels at all.
Still looking though...
@Renee: I also considered a utility cart option. I haven't found anything the right size yet. They're all too narrow (14-16") or too wide (36"). I'm hoping to avoid building anything, but I might have to. Do you know the item # of the Harbor Freight cart?