The thing with the aeropress is that it doesn't actually make an espresso (they say it does, but it's not really an espresso), it's more of a coffe concentrate. Then after pressing I just add enough hot water to make it a regular cup of coffee.
I'll add enough ground coffee to what their directions say for 2 cups, then after brewing and pressing I'll add enough hot water to fill a 16 oz cup and it seems to be about the right strength for me.
Remember that around the rest of the world a 'cup' of coffee is about 6 oz, only in the US does a cup of coffee equate to a 25 oz travel mug.
Oh, and burr grinders are definately the way to go, those grinders with the whirling blades will basically turn your beans into chunks of various sizes and dust so it's impossible to get an even grind with them.