I wouldn't call it "small"! It's a very important change for all the animals there! Congratulations! =)
I think you have made the right choice! You shouldn't take him out of a proper environment if you can't match it.
I can tell you for sure that the most important item you need to have is
information. If you learn everything you can about Bearded Dragons, you will know the difference between you can, can't, should or shouldn't do. You will make better decisions and will become a responsible owner. For everything else you have HC. There are a lot of knowledge folks around here
as I'm sure you know that will help you whenever you need.
Now that you have some practice convincing the shop owners, maybe you can talk them into keeping the Bearded Dragon reserved for you for a little while until you finish all the necessary arrangements
