if you want to grow "alot" i'd bulk. Just make sure your diet is clean and on point.

everyone in the whole freaking work out world would love to get huge and lose fat at the same time, very few have that ability if at all.

IF you're TRULY at or below 9% why are you so worried about losing fat while trying to get huge. You should have a full set of visible abs, striations showing etc.......

pick a route and stay with it. Though w/ masteron it is best used with a cutting phase when at your bf %