Keep in mind that it's sometimes difficult to find 1/4" plywood that has a good oak side on both sides (as most of the times, it's used for the backs, so only one good side shows). You'll see both sides in your plans (I'm guessing).
Wood Magazine had an article this past year with plans for something similiar (an entertainment center with 1/4 plywood panels in frames). Theirs was cherry, but obviously you could make it oak.