A chimney helps, but is not essential.
Just be aware that coffee takes longer than popcorn (what it was designed for), so if it has a plastic attachement on the top like my old B&D popper had, better to remove it as it will probably start to melt.
Storing beans is really better in a cloth bag that allows breathing. In plastic bags or containers, they can sweat. Short amounts of time in plastic is OK (away from heat/light), but bags are better. What they come in is a good starting point. I assume starter packs come in small bags?