Opening ideas, tournament prep

Hi, I am at the moment in the deepest preparation for tournament upcoming this Sunday. Wanted to ask you guys what do you think, what possible flaws you see?

Anyways. I am playing 3 types as white, 3 types as black. My idea was to make universally best combination for my style that would fit all oponents.

White: I start by playing Reti opening. If black avoids at all cost, it transposes to english opening or queens gambit declined if black plays perfectly.

Black: Against 1. e4 I prefer sicilian, hopefully Najdorf. Against 1.d4 love dutch. 1.c4 or 1.Nf3 will always transpose to english opening.

Let’s discuss. I am myself 15+15 time control lover. Rated 1750 on another site, much lower on chess.com. Do you think this is exploitable? I wish to be very best prepared against everything.