The wake is definitely not big enough with factory ballast.
I've been running 550s on each side of the motor, filling the center sac up completely (350#?) and then adding a 600# sac in the walkway. I usually fill the rear tanks 1/2 to 3/4 depending on the number of people in the boat.
Here's the thing with the new X2: the wake will not look very big at all even with this weighthing config. I came from a '02 XStar with 2250# in it and the wake is maybe 1/2 the size on the new boat.
The key on this wake is the use proper edging techniques through the top of the wake. If you back of your edge early you won't get any pop. You really have to work on this wake to get good pop as opposed to a 210 or X1 where you can take a lazy cut and still get bucked. This boat demands proper form.
The interesting thing my crew has found is that the wake at 80' is perfect. I usually rode at 70' (24.2mph) on my X1 but I've been riding at 80' (23.7mph) on the new X2. You can charge the wake at that length, get great pop but it's much easier to clear the wake then you'd think.