Don't look for the fast buck, if you are making a steady profit at SnG's then I would stay grinding out SnG's but just moving up in limits.
I have been playing micro($1.20 1-table) SnG's for a little over a week already and have cashed in 50% of the games I have played, mind you I have been playing only 1-2 a night and have been making a steady profit.
As it has been said above, "boredom is a BR killer" and I have to tend to agree with that.
Here are my last 7 days playing SnG's.
15 games played with an average profit of$1.80 and a total profit of$27.00 with an average buy-in of$1.27 with a win/loss ratio of 7/8, Early finishes 0.0%, early-middle 13.0%, middle 6.0%, middle-late 33.0%, and late 46.0%, during Last 7 Days.
So I believe with patience and discipline I will keep making a steady profit and you can too with some patience.
Just keep grinding and quit trying to make fast money.