The typical routing is north from Dawson Creek to Whitehorse. Then you have decisions to make. Consider Skagway, Dawson Or Tok. You get to chose one going up. First trip was Dawson, TOW, Chicken, Tok, Valdez, Anchorage, Homer, Seward. Denali, Fairbanks, Hyder. Second trip was Whitehorse, Skagway, Haines , Fairbanks, Denali, Homer on the Spit. Kenai Seward, Palmer, Fairbanks, Tok Chicken, Eagle, Dawson, then down the Cashier to Hyder. First trip was three weeks. Second trip was three months in the north. Memorial Day weekend is really the start of the tourist season to make your schedule interesting. You really need to see the Frantic Follies in Whitehorse. Visit the theater in Dawson for the Muppet boxes. Study the historical weather for insight into when to visit the different areas. Denali and the Kenai Peninsula in June. As the summer progresses the weather becomes more wet. On the second trip we saw the Denali, Mt McKinley, completely open for four days.
Fred Meyer store in Soldotna allows three days in there RV parking with water and a dump station.
Enjoy your trip.
Bill