Sun control film and Rear power windows for Indica Vista.

Hi Guys,

I need Sun control film and Rear power windows for my First car Indica Vista.

1) I want to know about the brands and range of the films.I can spend about 5k-6k for 4 windows and Both wind sheilds.

-Can i get an anti glare film for the front wind sheild?

-Can i get a good cooling in less than 5k?

2) Coming to power windows i need just the rear power windows and Auto roll on of the glasses when i lock the car. 

- How much would it cost & are there any particular brands ?

- Is auto roll on adviceable or does it have any problems ?

- Will my waranty get void if i get them fixed somewhere else other than showroom ?

- Will the wiring be tampered to fix power windows ?

Also please suggest me any good car decor who is reliable ie., on originality of the product & prices.