Your temporary cage sounds fine to me too, as does your eventual large enclosure. You truly don't need to rush the larger enclosure...you might hold off
for a year or more...he's not going to grow huge overnight & a 4' will work for at least that long, maybe longer (based on the one BCI I've kept).
Good choice starting with a yearling...that's what mine was. You've got plenty of time watching him grow, but he's past the first year so he's stronger & more
resilient. You shouldn't have feeding issues like with BPs, but do ask the seller what specifically he's been taking (mice or rats, live or fresh-kill or f/t), as it just
makes it easier to know, & less stress for the snake to have things that are familiar. A new home is scary enough for a snake.
Oh, and![]()