I realise how much money you have, and i realise who your striking options are and i stick by my original opinion.
Cavani is overrated and overpriced
I'm very torn on Cavani. Part of the reason he's been only good and not stellar as befitting his price has been because he's been shunted out onto the right, a position he technically plays but in reality is pretty pants at. He made or scored a goal 7 times in 16 starts on the right, compared to 8 in 11 when played as an actual striker.
We know from his Napoli days that Cavani's a properly good top class all-round forward. It's whether he can recapture that form is the key, and if he can then he is most definitely worth both the acclaim and the money.