No... I didn't say that your driver was "just ok"... didn't even insinuate it. What I am saying it the power distribution on the EP2500 would be better suited to a pair of 4ohm drivers.
If you do not plan to add any more drivers at a later date, the EP1500 would be plenty enough to do what you need done. It will provide you with 700 watts per driver wired in the bridged mono method:
They are both red because it is how the amp is wired in the bridged mode.