The extra foot wont really make a difference, and I know some wise person will make some comment, but majority of the time, if a boa will have a nasty disposition it will be a Nicaraguan or Hogg island rather then a Colombian.

I'm not saying all Nics and Hoggs are nasty, or that all Colombians are tame, but Ive read a lot of cases of Hoggs can have nasty cage aggression.