Noelle23

Canadians usually don't have too many issues with overstays.  Beyond that it wouldn't affect him unless it was 180 days of overstay.   He could be denied entry on a next visit or never denied entry regardless of the number of days spent in the USA. 
 
The k1 90 days to marry is completely different than his 180 days of visiting. 

Yes.  The k1 always allows 90 days for you to get married regardless of previous time spent in the US.

Well it seems like the accepted it if you got the text and the check is deposited  
 
Hope the NOA1 comes in the mail here shortly. 

Yes