"If you can decide without having made the list yet."

Since, you know, the list of lists will dictate what is bought in what order. He signs the final bit of paper then shoves it over and digs for his wallet.

"Stuff like a crate will be heavy so we might have to buy things in batches."

Since John doesn't have, you know, a puddlejumper to move it all with. Or a... car. Carriage? Whatever the local equivalent might be. Maybe he should look into something, in case they need to move the dog around quickly. Or just... move it around with... accessories in general.