coopmaster: You could chip 16 tris of the desk. 16 is assuming the bottom of the big board looks the same as the top and that the back is segmented like the front (but straight)
@Mudkips If you really want to make it DS spec'd try for 16 colors. It doesn't see, like you're using more than 32 right now, but that extra 16 colors is costing you 2x the VRAM.