Would you trade a 10th round pick (129th) for Three 1st round picks?
Now, before anybody gets crazy here, I'm not suggesting that these two players are even close to the same but the bottom line is that you don't always make trades.
I mean, how do you value the QB class available this year and could you guarantee getting the guy you wanted? Consider how you have built your team. Do you have a window of 2 to 3 years to wait for the Rookie QB to develop enough to actually win a championship?
Those are the kinds of things you need to consider.