Thanks to TBhp after much reading, discussion, audition, budget calculation and ultimately confusion

got my Fiesta 1.6 Zxi ICE'd with an all JBL setup and now enjoying every moment of it
The Setup:
HU - Pio 4050
Front Comps - JBL GTO 507c
Rear ovals - JBL GTO 937
Sub - JBL GT5 12" (in custom made sealed enclosure, to dimensions specified in the sub manual)
Amp - JBL GTO 74.5 (The Beast hehe)
Component RCA, Sub wiring & Power wiring - Ground Zero kit
Sub RCA - Kicker local
Speaker wiring - normal JBL wires
No Damping
It's an all grey setup and the total cost was around 35K. I started out with a 25K budget (Thread here) and finally ended at this. The configuration I started with and ultimately ended up are pretty similar, with lots of confusions in between LOL.
The install was done by a guy referred by Raxx and I am very happy with the setup. The install was clean and the guy did it according to how I wanted and most important of all, handled things carefully.
Hmm. Enough of descriptions. Now the Pics will do the talking.

The beast that will do the duty, powering the front components and the sub

The GT5 12" mounted in the sealed enclosure. The box custom made and finished with black carpet. The GroundZero sub wiring and the RCA are on top of the box

The GTO 973 for the rear fill

The JBL's before they are mounted. Sorry No pics of the front components. They were already installed by the time the pics were taken.

The GroundZero RCA's up-close. Bent connectors for easy connection at the amp side.

The Fuse screwed onto the engine bay, near the battery terminal.

The tweeters to be mounted shortly, in the stock location

Finally, the amp's about to go in place and Nitrous giving instructions on how & where to mount it.

Amp getting screwed to the back of the Rear seat. No Plank available as it was a sunday, and so a direct mount on the metal.

The amp, after mounted
The install took a good amount of time, with the installer taking time to do things slowly and properly. Nitrous and Million_Swords had come to watch the install and give their valuable tips & suggestions. Sadly, they could not stay till the install was over and audition the setup after tuning.
Three months ago I never dreamed that I would be so obsessed with the ICE, but I am greatful for TBhp and all TBhpinans who helped me calrify things and decide on the setup. many thanks.
Special thanks to Nitrous, who helped me source the ICE components and he helped me throught my quest for ICE. Thanks to Million_Swords, who arrived with the camera and clicking all the install pics. Thanks to Raxx to for providing the GroundZero amp wiring kit on time. The last minute attempt to get hold of power cable failed and this kit saved me.
Post install pics in my next thread....