Bhai, congratulations on the wonderful purchase, you've bought my latest love in horsepower and my next dream car.
For the suggestions, it would be a lot better if you had mentioned your budget limits for this stuff. I believe you are based in Sargodha so @ahmadbila is the guy for you, PM him or text him and he'll let you know where to get car support in Sardgodha, faster than you could eat an indian banana
And for wax shax, I think 3M performance finish is the thing for silver paint. Get Turtle Ice liquid polish for all exterior plastics/vinyl trims like headlights, tail lights, window borders, door trims etc etc.
Oh yes, just a little advice, very common but still worth it: Drive the car with pyaar and mohabbat upto 2500kms. After the 2nd oil change (first @ 1000kms) you can floor it all you want, do it at least once a week or so to keep the heart beating healthy!
Drive safe, Happy wheeling.