Knukonceptz are amazing products and very reasonably priced.
For amps it really depends on how much you want to spend. My only experience has been with Rockford Fosgate, Pioneer, JL Audio, and a few others way back in the day .
I would go with one of the better quality names like RF or JL and if you don't want to spend too much they have economy lines that are still very good quality.
If you are installing it yourself I would recruit a buddy that has done a system before to help you because it is very easy to buy great equipment and have a crappy sounding system just by simple mistakes during install.
Beware sound systems can be very very addicting and if you're not carefull you will be hiding purchases from your wife and meeting the UPS guy at the end of the driveway in no time...lol