Welcome to the forums. Probably jumping the gun here but I think the second cabinet will make for a better MAME platform - although a slightly unusual shape it looks in good condition, already has a large control panel area (great for adding more controls), has an exterior more suited to treating, laminating etc. and what looks like a larger monitor area. Once you're done with these, try your hand at building your own to truly be initiated here, then move on to resto's....