I want to play an open classical tournament in April. I don't want to overly study openings, because I still lack a lot of foundation elsewhere and need to improve.

My goal is to have fun and have positions where I can defend myself for at least 20 moves, even if I'll get screwed eventually. And being able to learn something while playing classical.

I want some preparations and opening philosophies as both white and black that allow more variance in the games. For example, I think that if I play the Rui Lopez against a decent player, I'll get screwed so early while the game that I might lose while still in theory.

I think I read someone here mentioning that playing solid positions benefits the best players, so I guess I should seek more sharp positions with many imbalances. Obviously I'm more likely to make a mistake on these positions, but so my adversary. Do you agree

What do you guys think?

• What kind of philosophy in the opening I should seek to make the games last longer and maximize my learning ratio from the games?
• Any suggestion of openings?

(I'll be playing in the first games players that have 99.9% win probability against me in the first games of the Swiss. But eventually I'll be playing other players in the bottom of the standings that I think I might have some probability of victory)