Your initial choice of the 609c and infinity 6530 are more than good enough. I'd go with the 6530 if the price differance isn't much
Since you're only running front stage and a sub ( my 07 didn't have space for rear speakers in the doors ), best to use a 4 channel amp. There's no need for another 2 channel amp unless you want to run your 2 way comps active
Amp prices have sky rocketed too. However, a good 4 channel that is a tad bit under rated and has enough juice to not let you wanting more from your speakers is the pioneer 4704. Sure the 6704 would be an even better choice but thats 30k+ these days. A 4704 will cost you in the ballpark of 24k
The jbl cs1214 is a good entry level sub. I have it in sealed box lined with polyfill and it's doing a great job of keeping with my Helix F62c's. It's tight and accurate and a great sub to start with. Offcourse there are better options but I got that for under 20k and I don't regret it
A good set of comps will cost you 25-30k
A good 4 channel will cost you 25-40k
A nice sql sub will cost between 20-25k
Pay more and you can get better equipment. It's really upto you. Ask soundvalley in pindi, haroon radio in karachi, soundworks in lahore about products and prices. Lasersound is another shop in lahore too
