Rate this 3 bet-strategy

[donkeykong2]

Yeah, we re gonna have another awesome voting thread. The purpose is to advance our game strategically, this time i m lazy though, so the strategy is rather simple.
say we have been playing a relatively tight game so far and have a solid image, especially we have not 3 betted almost anything. At the 6 player-table there are two quite laggy players raising around 20-25 % of their hands preflop. These guys shall be the target of our moves now. Next time they raise and we are in position we will 3 bet them with any 2 other than premium hands that we will just call them with. If they call and check to us we will bet any flop. The other table conditions are random for the purpose of evaluation. As time goes by we will still rarely 3-bet but if we do it we will target the lags at the table and we will still flat our monsters.
Profitable strategy?