Trident bangalore. Review on Trident Automobiles - Bangalore

I have booked i10 in trident Bangalore. Found it really overpriced for whatever been given. With nothing additional features from dealer.

Now need some accessories like (based on priority):

1) autocop/remote key less entry/with immobilizer.  taking from dealer (name cobra3191) 6K

2) music system sony 670USMP3 (asked for 9.5K)

3) speakers front/rear sony (quoted 3.5K)

4) teflon coating (3.5K)  is it recomendable to do it outside?

5) car cover( 1175 rs)

6) seat cover (fabric)  (quoted 3.5K)

7) foot mats (600)

8) anti rust coating (3.3K)

I need advice from people ,

should I purchase all this from trident accessories department with higher cost or better search outside.

Any recommendable car accessories shop anywhere in bangalore.

if close to mg road wil be better or towards rajajinager etc.

otherwise all things costing me 40+ K from then so overall cost will go more then 5lacks for magna i10.