Little wrong.

You need not only free space for such rainbow table, but you need at first to create it. And yeah, because of that you need strong computing powers. So it's unlikely to create rainbow table for 13 digit password of 77 chars aplhabet, because you not only need  100 000 HDD, but to crack all possible combinations to create such table 

I think OP is another victim of wallet seller. I must warn you that password bigger than 10 symbols with maximal alphabet (A3 = 77 characters) is uncrackable even with large mining farms. At least, in monetary terms. Noone will spend many time and electricity to crack wallet just with 2 btc. Even with 20.

For example, i counted needed hashing powers to crack 8 char pass with A3 alphabet. To crack it during 70 days (with 50 % probability it will take 35 days) you will be need 10 000 gpu cards Nvidia 2080 ti