I wouldn't put a computer in a cabinet of any sort, especially if it's to be used for high end work.
Computers can generate a lot of heat, they're much better in an open space.
That's a pretty small case too, especially for a high end system - you may find that powerful graphics cards will not fit very well in there.
If you're in the US, try Newegg - they have good prices on a lot of components, and you'll be able ti find a case that meets your size requirements, although I do advise against it.