audio system in this range, u can get pioneer 6902 speakers and an amp only (new). i am assuming u have a head unit already. maybe u can add front components of sony too if the amp price permits em.
for rims i think u will need a bit more unless ur baleno already has alloy rims that u are going to get exchanged.
wheel alignment is cheap and u can get it done under 500. there are shops in blue area which are good at alignment.
now bumper lights and wind press are an issue. first of all baleno bumper lights are quiet rare and can cost from 3000 rs to 6000 rs (original fitting wali). otherwise the universal lights dont really fit except the simple rectangular ones and they are not that nice. if you have a 2002 or above model with the slightly bigger bumper, ten u can fit projector lights in them with some alteration. the projector lights u will have to get from sultan k khoo. wind press u can try neelam market in saddar. if you find good ones, do let me know as i need em too. if you find any other solution to your wind press and bumper lights, do let me know.