I'm not sure what the age of your new boa is but I'll assume it is a juvenile.
Probably the best procedure to follow until you have an established boa is to set them up exactly, or very similar to how the breeder had it set up.
Yes, boas are fairly hardy, but when young, especially very young, they are susceptible to disease brought on by stress. A perfectly healthy young snake can deteriorate rapidly due to stress as it allows the immune system to weaken.
The whole process of shipping/transporting the animal has already changed its life and brought on stress. Exposure in a large enclosure, in a bright, busy room will compound the stress.
Try what the breeder was doing or something very similar to what they did. If that isn't possible, add as much top cover and ground clutter as possible. Fake plants, and more hides.
If your snake if tightly curled up in the very back corner of the cage it is a sign that it doesn't feel secure.
A friend of mine who breeds Pokigron, Suriname BCCs would recommend this same approach.
Congrats, and good luck with the new boa.
I should add that this advice comes with the assumption that the breeder you purchased from is competent and versed in properly keeping young snakes.