How tight can you play and turn a profit?

[PokerCat69]

I've had some financial problems lately and had to withdraw most of my bankroll to cover some expenses. I've left a little over $50 at pokerstars and hope to rebuild this playing the 5NL game.

I want to play tight as possible because there is less variance/risk and once I'm back on my feet and built up $300 for 10NL I can open up a bit.

I was thinking: AA-22, Aks-AJs, AK, AQ, KQs
Playing these hands a +EV game?