Openings for pawn storms I am a weak player and I always will be. After completing the opening I have no idea what to do and, since a bad plan is better than no plan, I decided to do this from now on in every game:


wait for my opponent to castle;
castle in the opposite side;
start a pawn storm.


My usual opponents are even weaker than me, so I really think it can work, and I expect it to be more enjoyable than just wait for a tactical mistake.
My question is... what kind of opening repertoire is most suited to implement my plan?
Since your opponent is most likely to castle short, you have to choose lines where long castling (for you) is reasonable.

With white I would suggest 1. e4, and against 1... e5 the Center Game 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3.

[Title "Center Game"]
[FEN ""]

1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3


Against 1... c5 you can play the Open Sicilian (2. Nf3 followed by 3. d4).

Against other black defenses you can find lines with long castling as well.

With black it's more difficult. You could try the French Winawer

[Title "French Winawer"]
[FEN ""]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 


against 1. e4 and the Albin Countergambit

[Title "Albin Countergambit"]
[FEN ""]

1. d4 d5 2. c4 e5 3. dxe5 d4


against 1. d4.