Room for disappointment in FA?

[The Goat]

It's a simple proposition... after cutting Marcus our glaring needs this off-season were, and oddly still are, a starting (preferably franchise) caliber OT and a play-maker at SLB. FA has been exhilarating and equally impressive but the two biggest needs remain and now we're evidently tapped out on cap space to address either position in FA. So... we're left w/ the draft to make it happen. Trading down to get a 1st and 2nd round pick could yield two legit starters but may likely put a franchise player at either position out of reach (for example Andre Smith or Rey Maluauga). I'm not complaining here about the FO but just raising the concern. Our o-line was abysmal last year and needs further upgrading, but we're an injury away from being depleted at LB (already too thin for comfort). What should we do now...