Putting new sound in my Golf GTI

Well the time has come to get rid of the riff-raff and get something decent.

12" Pioneer TS-W306C/DVC Sub
JVC KD-DV 6101 CD/MP3/DVD Player
or
JVC EXAD KD-AVX1 auto DVD
1400 Watt Calibra amp to run the sub and splits.
Rockford Fosgate P162S Splits

Thoughts and advice are all welcome.