Bip39 Compliant Default range of iterations Utilized in wallets is 2048. Expanding this quantity must enable it to be safer versus brute force attacks, nonetheless you will have to retailer this worth. To obtain your wallet with custom PBKDF2 you should use this script (or equivalent) to estimate your BIP39 https://classifylist.com/story20285803/seed-phrase-generator-mnemonic-the-2-minute-rule-for-seed-phrase-generator