You will want your hickory very dry. Unlike most other woods hickory performs best at about 6% moisture content. Bows from other woods will blow up at that low percentage. They are best at 9% to 11% MC.
When I buy lumber for any project, I like to let it acclimatize to my area before putting a saw to it. I learned while making picture frames for my wife that if I go right to cutting when I get the wood it is usually unstable and will warp and twist. After a week or so it becomes more stable to work with.