How much we'd like to trade back for Cincy's picks (if Tannehill is gone) should be the answer on how Cincy would feel about giving them up IMO.
I honestly don't see them using both firsts to trade up for Richardson.
I think Trent is one of those situations where he isn't a draft day priority but at some point might represent too much value to not make a slight trade up for, but even that might not happen.
Also, acquiring an extra 2nd rounder that high (#43) would likely cost us our 2013 1st rounder, so I'd pass on that in Alphonso Smith fashion.
If we hypothetically sacrifice a future 1st, it better be to acquire an extra 2012 first. Not a fan of trading 1sts for 2nds.
2013 draft wish list (10/10/12)
Round 1 - Keenan Allen - WR - Cal
Round 2 - Kenny Vaccaro - FS - Texas
Round 2 - Jordan Poyer - CB/KR - Oregon State
Round 3 - Tank Carradine - DE - FSU
Round 3 - Kevin Reddick - ILB - North Carolina