Im sure others will disagree but as I have said in other posts, you can't go wrong with an 8 inch bazooka tube. It will run you about 130.00 plus about the same for a small amp to push it. The package is small enough to fit in the convertibles trunk and still have plenty of space. The other packages that you listed are all very good, but cost a great deal more. And do not go to a sound shop to buy the Bazooka. Walmart.com has everything you need. I have had my system in three different vehicles and except for one loose wire, I have never had a problem. You may wnat to put a bass knob on it also because it will allow you turn the bass down when you dont need or want as much.
Also have not heard good things about the infinity bass link. Normally very high quality, but this specific item I have not heard good things about.