You can always add the sub down the road. My setup is 100x better than stock. So you'll be happy with the clarity and the volume you can listen to it. Just remember, installing it is half the install. The other half is tuning it properly. Setting the gains, setting the crossovers, setting the EQ.

 

The TR's are $90 a pair shipped I think I will order those for now, cheap enough till I can upgrade. But back to my original question, what hardware do I need to get these to work? What is a good place to order it all, Crutchfield?

 

Yeah, probably crutchfield, they come with everything you need, except spacers for the doors, Either make them from MDF or buy plastic ones.

EDIT: Actually, those may be slim enough to fit without spacing.

 

You're not going to damage your head unit with either set of speakers. The rms power rating is what the speakers will handle, not what they're going to try to draw from the headunit. As long as they're 4 ohms (they are) then the headunit won't know the difference. It doesn't matter if its coaxials, components, or thirty pairs of speakers wired together. If it comes to 4 ohms your headunit will only put out up to its rated power (its rated at 4 ohms).