you've got a problem. Your amp wouldn't be able to handle the 2ohm mono load if you bridged it. you would have to to connect the coil in series(8ohms), while bridged. and you would only get a fraction of the power. Another thing is that the amp you bought over rates their equipment, so you would put out a max of 250x2 at 4ohms. Don't try to run each channel to each coil unles you split one of the channels. what i mean by that is that you'd have to take, for example, the right channel rca and and buy something that would split the right channel RCA into two right channel RCAs and leave the left channel alone. Its hard to explain but i know what you'd have to buy. go to radio shack and ask them.
I hoped this helped and best of luck