Congrats on your ritz
, do update us on your booking experience and your ownership review as you put on the miles. I'm no expert but having gone through the thread, this is what i'd do if i were in your place:
JBL GT-X333. It comes at a great VFM price and the features too are just what you need to build your system. Budget around 4.5k
You can choose between JBL, Auditor, Illusion, etc. (4k to 7.5k)
You can choose between Auditor, JBL (GT5), Pioneer (?). A 4channel amp is desirable as you can use it to for future upgrades. Choose the one that comes where you can direct only bass to the rear channels.
It'd be great if you can recycle an older pair of ovals from before. If you can't then, JBL, Illusion, Auditor are the brands to look out here.
Go in for a branded fuse and quality wiring. You get good VFM cables from a company called MDR Electronics. They sell under the MX brand name.
for your front speakers
for the oval speakers in the rear
get the front doors damped for now.
Mount the components on the front doors. Wire them to the front channels of the amp. The rear ovals, mount them on the mdf parcel tray. Wire them to the rear channels and ask your installer to tune it such that only the bass is sent to them (acting like mini woofers)
Get a good installer who'll be gentle with your new car and who'll use a coupler to avoid ruining the warranty amongst other things.
Also, while equipment brought through the official channels is always desirable, do ask around for reliable grey-market dealers. This should help keep things under budget for you.
Phew! Sorry about that long post. Hope it didn't confuse you. Do double check the above information with the more knowledgeable members on the forum.
Good luck :)