It would be advisable to add a tactics book or three to your collection. Once you get a good feel of how the pieces and pawns coordinate (and that is where your tactical training comes in), then you may move on to theory to find the best pawn formation and piece development suited to your style of play. Otherwise, no matter what opening you use, without tactical understanding, it will be useless.
I currently have (and am reading) four chess books:
As still a novice, what book recommendations are there for opening theory?
Thanks.