Fodor's Travel Talk Forums - Help with 10 day Alaska itinerary (wheelchair accessible)

We are a family of five (all 21+) with one in a power wheelchair. We are considering a 10 day Alaska trip for mid-late August. We enjoy beautiful scenery, scenic drives, charming towns, good food, and a little shopping. Unfortunately, we aren't able to do a long cruise because some of get seasick very easily. So I am thinking we will rent a vehicle and do a 10 day land tour. Right now we are thinking of the following itinerary:

Night 1: Fly into ANC, stay in Talkeetna (seems like a good place to stop on the way to DNP)
Night 2: Denali
Night 3: Denali
Night 4: Anchorage/Whittier/Seward (this will be a long driving day)
Night 5: Seward
Night 6: Seward
Night 7: Seward
Night 8: Homer
Night 9: Homer
Night 10: Whittier/Anchorage (depends on when we have to be at the airport)

Is that too little time in Denali? Where should we stay in Denali? Inside or outside the park? We want to see all the highlights but aren't able to do any serious hikes because of the wheelchair. We defintely enjoy any trails that are accessible (doesn't have to be paved but terrain needs to be compact, distance and steepness don't really matter).

And that leads to my next question...how is the accessibility in Alaska? Are there any accessible trails and activities in the national parks? How about the towns, are they fairly accessible? We want to do a day tour out of Seward to see the Kenai Fjords. Are those accessible?

Another option w'ere considering is to do Sitka instead of Homer. Which one would you suggest? Would Sitka be worth the flight for 3 nights? And could we do a day tour of Glacier Bay from Sitka?

Would love to get input on the overall accessibility of Alaska, and how much we'll actually be able to experience. Also open to suggestions for itinerary changes.