I'd field an advanced B-team as well and rest the key players for Paris. Given that the championship is lost and the second place quite secure, the league has become a perfect competition to test a few formations and players.
As for Cardozo, he should play indeed, he urgently needs to get some confidence, maybe Portimonense could provide a few opportunities for him to do so, albeit we know that there is no team in the league that we should underestimate.
However, I'm quite confident concerning the match, but in the end it doesn't really matter.
Agora não, que joga o Benfica!