Good! Excellent due diligence.
Good to feel out the pet store owner too. They can be a resource. Bonding with them and having them answer questions and be patient likely means they will be there for you long-term.
I recently bought 5 6X2' tanks from Jeff Ronne at Boaphile. I asked about 100 questions before ordering, and probably another 30 after they were delivered! His knowledge and patience, especially the latter, convinced me to do business with him. As a side note, I am not disappointed at all. Very happy. However, if he had been short with me, or didn't take the time, I would have been less inclined and worried about his help long-term.