Getting the 4th would give you 1,4, 4, 5 picks with Ryan, Johnson, and CJ.
Compare that with Ryan, Boldin, and CJ, which is solid.
Consider the depth you get with a 1st and 2nd rounder and 2 5ths, versus a 1st, 4th, and 2 5ths.
There is a drop off from AJ to Boldin, but I don't think it outweighs what you can get in the 1st and 2nd.
If i knew the who is in the draft pool and your pick numbers I could go mor e in depth, but just look at the before and after and what kind of scoring you will get in each scenario, then decide which one makes you better.