Beginner Questions (Ask Them Here!)

Hi Guys - I'm new to Cigars and to the site and had a question about my humi set-up.

The humi is about a 150ct and I was going to get 8oz of Shilala's beads for the humi. My Question is.. is it better to get one 8oz bag of beads and keep it at the bottom or top of the humidor OR is it better to get two 4oz bags and keep one at the bottom level and one on the top level. Is there a better combination? Does it even matter?

Thanks in advance for the help.