What's my next move?

I'm a 9-5'r who really thinks I have at least some type of future online, have been playing as much as possible for a year and am looking for suggetions as to how to be sure if I do, and to develop a strategy for making these 3K-10K profits monthly which I see everyone posting about.

I currently am 1-tabling 11/22 NL SNG's and an occasional 55/110 if bankroll allows; at Paradise (I dont believe you can multi-table sit and go's there). I keep no stats on opponents and have a 40-45% in the money ratio. So I believe my play is solid.

If it helps I kept track of my last my last 51 games:
Netted $540 (does anyone have an average time per game, I've been using 1hour for calculating purposes)

13 games @ $11 buy-in

wins-3
2nd's-3
3rd's-2

38 games @ 22 buy-in
wins-6
2nd-7
3rd-3


Where do I go :

Multi-Table?
Higher Limits?
Keep Stats on opponents for better results?
All Three?

Thanks for your advice........