Purchasing Partially Built Primary Residence

[Da Deep]

Folks, I could use some help here. The builder/seller has the basic structure ready. Electricity wiring is done. Sheetrock is going up this week. He's willing to sell AS-IS, or after finishing the house. Am I better off buying AS-IS, then having the house finished myself? This way, I may save some money and get the house customized to my preferences?

Or should I have him finish the house? What are the pros and cons of each?

If I were to buy the house AS-IS, what are relevant things to check for? If you were going to inspect the house today and meet with the builder, what all would you ask him?

TIA, Dave