>>I have not finalize detailed activities at each point
With all due respect, this is a very funny statement. With the itinerary you listed you don't have time to do very many activities at all. If your purpose is to experience Alaska, see wildlife, enjoy the culture, history, scenery, etc. it won't happen. If your objective is to put as many miles as possible on Alaskan roads, your itinerary fits the bill perfectly.
Are you traveling alone? What are your interests? You mentioned staying "in" Denali NP - where? Pretty much only campsites within the park. Are you planning on camping? RV'ing?
The best place to see bears is Denali NP. But you arrive on Day 2 probably mid to late afternoon and you have to leave on Day 3 for the marathon drive to Paxson. Tell me how you will have time to see bears there? Best is if you spend THREE nights in Denali - arrive Day 2, then on Days 3 and 4 take shuttle buses to Wonder Lake. No need to even go all the way to Wonder Lake, but if you book to there you have a guaranteed seat to there. Bears are often seen further inside the park that time of year, but the minimum required is an 8 hour round trip bus ride to Eielson. If you are not willing to slow down, smell the roses and take time to truly experience a place, I think you will have left Alaska with a much different feel than the state really presents.
We can help you design a much better itinerary, but only if you are willing to consider other options.
Edited: 26 June 2012, 16:46