A lot depends, too, on the individual and what types of experience would be considered must-do. I've generally been fine with fly-drives to ANC and using either a daytrip or round-robin strategy on the road system. Will do the short hikes (not the epic backcountry ones) and leave camping with the "state bird" to others, and usually pick the low-hanging fruit (Exit, Portage, Matanuska) as far as glaciers go, though I did do the Marine Hwy. trip past Columbia Glacier. The road trip to Whittier on the old single-lane tunnel was memorable.

With enough funding you could be a lot more ambitious about places to see or things to do. If it's your first trip, though, you can do fine by spending 25K miles in shoulder season, renting a car and seeing what's easily road-accessible.