Did you find out his age and weight. Just because mom and dad are small doesn't mean he will be small. I have seen several places that take pics of when they are small but at 8 wks they are adorable but 3 pounds. That will be a large Yorkie.
Remember you can use this as a guide
@ 8 wks triple the weight
@ 12 wks double
Would hate for you to make the drive only to be disappointed.
Let us know if it works out for you.
Judy