I'm stacked at RB, need a top tier QB. What makes sense?

Ok guys, I'm in a 16 team league that starts 2 RBs, 2 WRs, and a flex RB/WR.  2 points per reception, 1 point per carry, 1 point per completion and -1 point per incompletion.  Here's my team:

QB: Matt Ryan

RB: DeAngelo Williams

RB: Arian Foster

RB/WR: Justin Forsett

WR:  Steve Smith (Carolina)

WR: Hakeem Nicks

TE: Vernon Davis

D/ST: 49ers

K: Lawrence Tynes

Bench: Reggie Bush, Fred Jackson, Brandon Jackson, Legadu Naanee, Johnny Knox, Santonio Holmes, Matthew Stafford.

I feel like I'm the deepest of any team at RB and want someone like Schaub.  Would this make sense for me to offer Ryan and Brandon Jackson for Schaub and Javhid Best?  He also has Moreno and McFadden, but don't think he'll give up either one of those guys.  Is my offer a fair offer for both sides?  Thanks guys.

I think I might make the offer anyways for Peyton.  His RBs are:

Jamaal Charles, Darren Sproles, Steve Slaton, and LaRod Stephens-Howling.

If he says no to Brandon Jackson and Ryan, who should I offer after that along with Ryan, DeAngelo or Foster?

Thanks again.

What are points for TDs and yards?

If it's 6 points for TDs and 10 yards per point then you can afford trade DeAngelo Williams and Ryan for an elite QB. Foster, Jackson (because of that offense), and Bush (because he'll get 4 or 5 catches a game) are fine starting RBs in a 16 team league.

Agreed, give Ryan a couple more weeks. No QB really succeeds in Pitt. You have a monopoly at RB and no need to strengthen another team for a few more pts each week at QB.

Yes it is 6 points per TD and 1 point per 10 yards.  That's how I'm looking at it right now... I want an elite QB and feel like someone will be desperate enough at RB to give me one. 

But I did draft Ryan for a reason.  I like his weapons, and feels like he'll have a breakout year.  Whether or not that would match up to Manning or Schaub's numbers is another question.  The guy with Manning won't be a threat even if I stregthen his team a little. 

I guess he accepts my offer, then great.  If not, I'll sit on Ryan for a couple of more weeks and see how things go.  Thanks the advice guys.