Pyle is a cheaper brand, I wouldn't say they're horrible. A self powered 10" sub for $175 isn't a bad deal. But assuming 100% efficiency you will only get about 560 watts, so keep that in mind.

Your 4 channel amp is an A/B style which while it does sound good it's not the most efficient which means it will get warm, having it in the foot well might not be the best idea.

For ease of wiring I would run a single 4awg or 1/0 to the rear and then have a distribution block to run a line to the sub amp and the 4 channel. Having the amps accessible will make things easier when setting your gains and crossovers which will require a lot of experimenting to make sure everything is dialed in properly.

My current set up is:

Hifonics BRZ 1200.1d sub amp powering 2 pioneer 12's
Rockford Fosgate t400-4 4 channel powering 2 pairs of Image Dynamics CTX65cs
I have 1/0 OFC wire from NVX running to the trunk and did a big 3 upgrade with the remaining copper I had.