Even as a loose aggressive, playing 74s in early position is a little weak. Its a two gapper, so the flop you hit with it was literally the second best possible flop for you (next to just flopping the nut straight). The other 98/100 flops would have almost completely missed, and two pair with 74 is something that gets counterfeited by a board pair like half the time.

So long story short, in 100 hands you'll win one or two massive pots with a straight, a few stolen pots with post-flop aggression, and the other 90 will be lost bets. You'd probably lose money in the long run.