[albanycobra]

I know the feeling of apprehension when the kit is nearly ready to ship.....

Most of these apply
anxiety, angst, alarm, worry, uneasiness, nervousness, misgiving, disquiet, concern, agitation, restlessness, edginess, fidgetiness, nerves, tension, trepidation, perturbation, consternation, panic, fearfulness, dread, fear, shock, horror, terror........