Travel within Alaska can be expensive, especially if you plan on renting a car. However, some activities (such as Denali National Park) require a car or private transportation. Consider taking a combination of tours, shuttles, and public transport to save costs. Plan your routes ahead of time to minimize travel time.
If you have more time, consider adding a few days in Juneau for glacier viewing or a wildlife tour. If you have less time, consider skipping one or two locations that may not be as high on your priority list. Make sure to bring warm clothes and rain gear, as Alaska's weather can be unpredictable.