I'm not sure how long you envision being in Alaska but I'll assume 5-7 days, if that's the case I would suggest finding a rental home for the duration of your trip and book individual or packaged fishing charters. You might be able to find a 4 night / 3 fishing day package at a lodge somewhere that will be close to $10k but it'll probably have to be early season. The trips I've planned in the past have been $5k - $10k per person.
I'd suggest somewhere along Kenai River, maybe Soldotna. Kenai Fly Fish for example offers a full day of fly fishing for $325 per person. You'll lose the lodge aspect with housekeeping, shared meals, (etc.) but you can still have excellent fishing which is probably the focus.
Regarding your question about booking direct or with an agent, I would say it depends. If you know the exact lodge you want to stay with and that's all you want to do on your trip there isn't much added value I can provide. If the fishing lodge is part of an overall trip I can help with the full thing, so it could be helpful if you don't want to do the added planning. If you don't know where you want to go, working with an agent will save you all of the time researching and figuring out the logistics. For the high demand lodges, they will often reserve portions of the inventory for clients coming through agencies or local partners, so it can be very beneficial in that instance.
Feel free to reach out if you have any other questions.
Luxury & Adventure Family Travel Agent
Personal Travel Concierge
Europe • Africa • S. America
www.voce-travel.com
Kyle.regitz@fora.travel