YOU SAID:
I would have had to have had 30 to have been able to buy that bread.
INTO JAPANESE
そのパンを購入することがされている 30 を持ってしなければいけなかったと思います。
BACK INTO ENGLISH
I have 30 has been able to buy bread and I had do.
INTO JAPANESE
私が持っている 30 は、パンを購入することがされているし、していた。
You've done this before, haven't you.