Incubating corn eggs

[Wizer69er]

Hello i have some corn eggs on the way and i will be using a Hovobator to incubate them my questions are should i use vermiculite on the actual screen rack in the hovobator? Or should i use a rubbermaid container with vermiculite in it and does 80f sound good to you for corn eggs. I only ask these questions because this is my first time attempting to incubate eggs thanks in advance Blair.