Get my password back

I forgot the password of my 1 Bitcoin wallet in Bitcoin core. My password was around 10-12 characters. I want to get it my password again with Hashcat. It will take thousands of years with the Brute Force. I'm looking for a hashcat expert for rule files creator for combinator, mask, hybrid, and world list attack, of course I'm open to ideas from people who want to offer me other options. I can only pay when I am happy with the completed work.
Thanks for bidding