The eagle photo ops in Homer are strictly a winter experience when they are congregated for feeding.
Probably the most successful photographer in the Kenai Penninsula region is Ron Niebrugge in Seward. I don't know if he guides or leads tours.
The suggestions for Denali are good. If you haven't been, it's undoubtedly the most photo-rich area in terms of landscape and wildlife shots per mile.
Alaska is huge beyond the impression you might have from maps. Cartographers shrink it to fit the page when showing the US all on one page. From one end of the state to the other is comparable to the distance between Seattle and Miami or Seattle and Mexico City, depending on how you cant the overlay. In fact it's more than twice the size of Texas. The combined area of parks, monuments and refuges alone is bigger than California. Considering the very limited road access to most of it, you just aren't going to see much in a week. I'd concentrate on one region such as the Kenai or Denali and reserve more extensive coverage for a series of additional trips.