Yes, your lead should also be taking into account stock hrs for your section so if F is toys and seasonal each at 3hr stock time, realistically you can zone an 1hr and push all your truck in an 8hr shift. This is not including 141, so your lead will need to decide the priorities in what they expect done and you should ask how they can help or get you help to complete sequences. Things may happen between guest, backup, etc that will lead you to not finish or get behind, but you are responsible for your time management and need to make sure your getting your goal/expectations from the lead each day and check in with them.