Bip39 Compliant Default range of iterations used in wallets is 2048. Escalating this range should ensure it is more secure from brute drive attacks, on the other hand you'll need to shop this worth. To entry your wallet with tailor made PBKDF2 you should use this script (or comparable) to https://socialbaskets.com/story4072506/bip39-utils-bip39-word-list-secrets