You're not locked into any of these things. This information helps the USFS keep track of usage trends. From the entry point, it's up to you and your group. Some groups choose to travel in a short way, then base camp for the week. Other groups like to push the entire week, traveling to a different campsite each day.
Some groups come out the same entry point, and others come out a different entry point.
Route planning involves judging your group's ability level, strength and perseverance against the portages and lakes in the Wilderness. Novices or groups with children will probably be happier on a route with portages less than 100 rods. Those who travel the BWCA often see no portage as a hindrance, though, and you should always strive to expand your boundaries. Consider the risk of running rapids in a Wilderness Area where your only rescue may be a day-long paddle out, then an hour ride to the hospital in the car. Outfitters often display a photo of a shiny aluminum canoe folded over a rock, irretrievable until the late fall or winter months.