No, no, no, no, NO.
NEVER trade a fantasy stud for 2 mediocre players. You want to be the one getting the superstar, not giving him up. I got bombed the first week also, but there are 25 weeks left, and you're going to end up hating yourself for dooming your season after one slow start.
Your team is solid, they will come around. Mauer and Hamels will get healthy. Holliday will start to mash.
Keep your eyes on the waiver wire for SPs. The back end of your rotation could use some tinkering, but that doesn't mean you should open up a gaping hole in your OF to fix it. SPs are the most unpredictable, and the easiest to improve with timely waiver moves.