BCI tend to be more rust colored tails where as BCC are blood red like Surinames or Guyana. If it was from a pet shop, then it is probably a BCI as I've yet to see a regular pet shop sell a BCC. And if the mom and dad are that big, baby is probably gonna be around there which sounds about normal size for a Colombian. BCI also are like garbage disposals and eat everything where some Suris can be picky about food and quick to regurgitate. So to sum it up, you probably got a male BCI that will grow around 6ft or so. They are great snakes though. My girl is a BCI and she has tons of personality and loves her head scratched and to come out and ride on my shoulders as I do stuff around the house.