I dont think we would do it. We have two somewhat proven commodities with Davis and Peek.. yah I know they arent pro bowlers yet.. but neither is anyone we are gonna get in the draft. Davis is our only real threat at RB right now. There is no telling if Ronnie Brown would make the transition to the NFL or not. As for Peek.. we are finally starting to realize what we have in him and he could be our starting ROLB of the future.. there is no garunteeing that Johnson will be as good as Peek.
There is also no garunteeing that we will get Johnson or Brown with our 1st rounders.
if the Raiders offered their 1st this year and next year id take it :P .. then the risk would be worth the reward. But right now.. we would basicly be trading two starters for one possible starter.