Those will work. The only thing that bothers me is that even on Pyle's website, I can't find all the pertinent specs. Specifically the RMS power handling, as opposed to peak. But for a basic system, they will work fine. Personally, I would go with the pair of 8"s, wire the dual voice coils in tandem to 8ohm, then wire the subs in parallel to achieve a total impedance of 4ohm, then use around a 600 watt amp to push them.
With
THIS amp, you have two options of how to wire it all up. Either bridge the amp to single channel and wire the subs as stated above, or run the amp as a 2 channel and wire the dual voice coils in parallel and run each to a separate channel on the amp.
The second option is easier, and so probably the one you would want to go with.