Guys like Woodley/Hali/Foster are nothing more than a pipe dream. BB isn't gonna give any free agent from another team a giant payday with all the draft picks they might have to pay this year.
Resign Mankins first and foremost, even if it means giving him the top 3 guard money he deserves. Kontra already said this but the line has been a completely different animal since Mankins came back, with all the turnover that's gonna happen at O-line in the next few years, they need to keep Mankins as the anchor/leader.
Give Light a 2 year deal
Mike Bell and Ricky Williams as two cheap guys to complete the RB core beyond BJGE and Woodhead.
If he's not too expensive then Shaun Ellis. A veteran on the line other than Wilfork who'd still be good if he isn't playing every down (which he wouldn't), and without him the Jets' D-line becomes an absolute mess.
There's no particular receiver they should sign, but please don't bring in the next Joey Gallaway/Torry Holt wash-up and expect him to make an impact. The most they should do at receiver is draft someone later on who would have to fit in with the offense. Right now they have a group of productive receivers without anyone who'd ever complain about touches, lets keep it that way.