Dunno what exactly i am doing?

I believe that's a 4 ohm stable bridged amp... so I wouldn't parallel 2 4 ohm drivers and expect it to last.

And actual power bridged at 4 ohm is 400-500 watts I think, but lose the Pyle's and get a decent 12... Idk... (maybe a Skar SDR-12 or an Sa-E12?) lots out there and you'll probably be ok. Really so many options for any budget but Pyle?.. I'm just gonna say NO

Those Pyle's will be peaky AF no matter what you do around 50-60hz so don't expect killer lows from those drivers. 

400-500 watts on a single decent 12 in a correct enclosure can sound pretty good so don't get hung up on using those 2 boat anchors you got. The amp is adequate I'd use it , and get a better 12 then build a box to tailor it to your music tastes.