Kicker subs you are using , are they 2 ohm or 4 ohm version ? I guess its the preloaded subs in enclosure from kicker .
Share your budget and what options are available there .
If its the 2ohm version then you need an amp to push at least 1500rms @ 2ohms
if 4 ohm then I'll wire them at 1 ohms and look for amp which pushes 1500rms @ 1 ohms
See if you can get rockford fosgate 1500bdcp , best amp for SPL , I myself using rf 1500bd