Hi Balraj,
firstly good for you, its great you want to get on your bike and work.
Your prices seem a bit on the low side, try going higher and let people negotiate you down if they feel its too much. The cheaper you make it the less seriously people will take you.
Avoid telescopic ladders, buy the best extending ladders you can afford, possibly a 3 section but light enough to carry around all day. Next get a decent chain and padlock so you can leave them safely behind a customers house at the end of the day.
You'll need a bucket, professional squeegee and applicator and fairy liquid. Also a few microfiber scrims, some old towels, 2 window cleaners pockets and a "bucket on a belt" (the holster to put the squeegee and applicator in).
If you can get through the first winter you'll do well but long term you should aim to build up to a van and a full water fed pole system. This forum can give you a lot of support in the way of good advice, ignore the guys winding you up , they also had to start somewhere. Finally, be careful and don't take risks.