Hey all, I am very new to reptiles and after weeks of research and years of only being able to love snakes from a distance I feel ready and prepared to buy my first BP. Through manuals, forums, and other helpful sources I have learned a great deal about husbandry. I already have a tank set up with humidity sitting at 60% and with my warm hide hanging out right around 90F (heated w/ UTH w/ thermostat) and the cool side around 80ish. I'd like to buy a younger snake and have a 10gal set up and ready and a 20gal on standby in case I end up getting a snake a little older/bigger.
I plan on going to a reptile expo next weekend to check out the BPs there to see if I can find one. I find myself most worried about one thing in particular though... There are so many morphs out there and I have some in mind that look beautiful to me, but most important in my opinion is buying a healthy animal from a reputable breeder.

So, in short, my question is: what are things you look for in buying a healthy BP? Also, what do you look for in a reputable breeder?

Thank you all in advance for any tips on things to look for or avoid!
(If this is something that has already been asked/answered, my apologies. I'm new to the site and couldn't find anything similar using the search but I probably missed something.)