since your amp is only 2 ohm stable I would get the dual 2ohm subs so you can wire it down to 2 ohms. you wire each sub up to 1 ohm
1ohm+1ohm=2ohm, this will get the most power out of your amp and still be stable. just use the kicker wiring diagram in my source link.
Use parallelel wiring on the voice coils then wire the subs in series.