Infinity speakers?....alright. But, consider spending a bit more to get a marine coaxial with a true dome tweeter that is considerably smoother rather than the W-dome used by that Infinity model. A W-dome is efficient and aggressive but also with a very erratic response. A little too harsh for my ears.
Pyle amplifier?....awful! No switching power supply. Just a BTL amplifier similar to a head unit. Totally bogus specs. Step up and get something that is a keeper. You need a three, four or five-channel amplifier if you are certain that you will be adding a subwoofer in the future.