You can get a similar result without trading draft pics by:
RD 1: OL
RD 2a: Zach Ertz
Rd3a: Ryan Swope or comparable fast guy.
Remember, this is the draft and there is rarely a sure thing. More picks = more hedging of bets. Who knows who will be better with Ertz vs Eifert so why not save your picks and try to get Ertz. You get your speedy guy that everyone on this site seems to be clamoring for (as if Wallace wasn't good enough) but you get him later and you get a bigger speedy guy. You also get to keep a 2nd round pick to draft a CB/DE or whatever and you get a starting O lineman in round 1 to keep Tanne on his feet. All problems solvedish.