I think at best you can begin to get a feel at this point, but I would caution you against making any changes to your game here. Unless you are losing badly.
2500 hands, 4 tables, took you what? Less than a week, or maybe only a day. There will be many more than a few players who will do 2500 hands a day.
You will want a # of hands that spans not only a growing number of hands, but a growing amount of time. You want to be able to observe results that cross multiple variables in your play.
Variables will include daily mood swings, week mood swings, and the variances of the cards and how you react to how they fall.
10,000 hands would be better, and 50K better still.