Dont build sideboards ahead of time. I know right now I have a problem with board wipes... I figured most aggro decks have a hard time resetting but I feel the Huntmasters would help. Cause the life from the flip is very helpful ad then Champion gets bigger. I'm also thinking I have to many lands? Would you agree. Also I don't really make sideboards till the actual event... It all depends on what I observe at before the actual tourny.