I think you should pull Guard, worst case scenerio he begins a pass and you pull HG if your not fairing well enough in G, if you get any 100% at any time, take'em. but you should work G > RG > incase of fail HG.
When pulling guard don't just jump to it. Tie up with them and immediately push them away, then, as they push back pull guard. Just like Joey said start in FG and work your RG (trust me its high percentage) then if they pass bail to HG and work that game. Know that you're ready. WAR!!!