I like to do this, as well as a few other people I know...
Change the oil after 1K miles in order to let the engine clean out the small slivers of metal that might break off into the oil while not giving them enough time to meld back in at od points. and then I usually continue with regularly scheduled changes (3K, 6K, 9K, ect.)
As for torquing the engine out, it shouldn't hurt it too bad, and like someone else said, clutch and synchros are likely to be needing replacing sooner, especially with these transmissions.