Wallet.dat recovery

Hi guys,

I have wallet.dat btc which I didnt use for long time and forgot passphrase. I have some candidates for it and it doesnt work. 

My question is related to this great software which I started for hashing. So I hashed out wallet.dat and import it in .bat file which is starting hashcat.exe. I am doing this with 3x1060 6gb gpus and those are working good on 100% but...

1. I didnt import words in it cause when tried it says need -a 0, when try to make -a 0 it doesnt recognize hash. So how to import words?

2. when will I know if it found passphrase?

3. What about masking, I read it a lot about it but do not have clue of passphrases?

4. what rules is best in my case?

edit:
5. if electricity stops what about log file?

I am on win7 64bit 

Thanks in advance for help and maybe this will hlp somebody else