I would make this trade NOW!!! as in right NOW!!!!
Portis is the best player in the trade (I too think Edwards has a nice year and Palmer will start the season and will be back to form)
Even though you really don't need Portis, he is still a stud and a top RB in which someone will always need a RB in the season. I say grab Edwards and Portis and worse case scenerio is you trade Portis away to someone else for more value then Ryan and Benson (Who???...lol)
Honestly I think you could package Portis and Edwards (or Palmer) right back to another team for a top TE (Witten, Clark, etc....) and a top QB (Brady, Brees, Rodgers).....something like that easily then you would have an unbeatable team!!!
BTW.....nice team BTW and it looks good already but I think you should make this trade and then turn right back around and try and get a TOP QB and a TOP TE......then you will be set!
Good Job and Good Luck!
Standard H2H 12 Team 1 Pt PPR, Start 1QB, 2RB, 2WR, 1 FLEX (RB/WR/TE), 1TE, 1K, 1 DEF