With some words such as money and time we can use enough before or after the noun; but now I come to think of it, probably, and judging by the results of the poll, 'enough' can only go before time here because of the to-infinitive expressing purpose. On the other hand it is not the same I have enough big nails and big enough nails...Therefore, in a nutshell, I don't have the faintest idea. Please, tell me.