Maybe you can undergo hypnosis and hope that more of the words can be drawn from your subconscious mind? It could be a relatively cheap option.
That's a good idea than spending a lot of money on brute force tool but if it has a lot of coins on it, you should do that hypnotic therapy session with one of your family or trusted friends we are talking of Bitcoin here if you have 10 Bitcoins on that wallet that's already a fortune.