In Bangalore for 20hrs. Plus night rest. Local Service Bus Airport to Bangalore Cant?

I'm flying in by bangalore and arriving at 10pm. hoping to catch some sleep at the airport. Should i exit the immigration or should i just wait around and enjoy the facilities inside and exit later in the morning?

Cheap transport to get to Bangalore Cant? My train leaves at 7. I should be there early right? Any like bazaars or markets i can purchase some clothings before i catch the train? i'm not keen on shopping centers/malls.

Advance thanks for the info.

You can check the BIAL bus timings and arrive at the station early morning.
I think you should remain inside the airport , cause there is nothing outside. No shops will be open so early ,except tea shops and the like , so you can take a bus around 5:00 AM - 5:30 in the morning (if there is one) else you can also get cabs.

Heh, i apologize for my mistake, its 1900hrs, not 7am. so i guess that cahnges the scope of the question now.
And what about this BIAL bus? is it a local feeder bus around town?

I presume that you must have a hotel booking then for night stay. You can reach the hotel anytime at night ( The Duty free shops of BIAL airport are good I hear , so you can visit a few of those,but what I hear is that many shops are yet to open )

Next day ,refreshed you can do some shopping , some of the places are Commerial Street in Shivajinagar(the ideal place infact) or Brigade Road , both places are near to Bangalore Cantonment.

actually, i'm watching my budget real good. i do not have a hotel booking for when i arrive.( i'm not sure if this is wise, but i'll relate the experience when i get back) So, i've got 20hrs from when i land to when i get to my train bound for delhi. therefore i am intending to catch some sleep in the airport, but can i get back to the transit area after i collect my baggage?