actually, the breeder is very well respected.
I only stress that it's a BCA because they are known to have more sensitive stomachs than BCI.
The waiting for a poo is again BCA (and BCC) advice I got from several sources as well - they apparently can get impacted from too frequent feeding.

I value all the advice though - it's always good to question information ... I have no experience to fall back on.

The truth is, I fed extra large fuzzies (a little smaller than hoppers) just to be conservative. Still a much larger bulge than I have ever seen on my BP - perhaps it's more normal for a boa?

and yeah I think the hairball comment was meant to say if they are going to regurge they'll do it around day 5. he said that as they go from fuzzies to hoppers the extra hair takes some adjustment, and then going to weaned mice the extra hair again can be troublesome.