Actually Jon, building a table that doesn't rock might be more difficult than building a guitar. Many years ago my wife and I put together a Clavichord kit. There were no hitches and it plays beautifully still (I think it is about 28 years old now.); but neither of us can hang a door so it doesn't squeak or bind.
If you do get good at building guitars, remember your friends.
One thing that worries me about buying a Korean made resonator. They do seem to have less quality control than US and European manufacturers. When I looked at ordinary guitars, I noticed some Asian made ones had struts that didn't manage to get glued in properly and several things like that. As far as I can tell, you can't look inside a dobro-type guitar. Is that true, or can you remove the resonator (without a can opener!) and look inside?