Oh, My Zuglo! It appears that you are very nervous about making a decision.
Be informed, ask questions, do research but please remember no one has built the perfect house yet! . You say that the home looks to be in great condition. I suggest you move forward!
Remember even with new construction there can still be issues down the road. When the use of polybutelene plumbing, sonotube ducting, chinese drywall,synthetic stucco siding, masonite siding, or cement asbestos siding was first introduced in new construction, builders thought these were great products. Now we know better.
So be informed, ask questions, do research , get any & all inspections you deem necessary and move forward.