Hi Marypamela,
I am going to India for the 4th time (this time with another travel company!). I am away for nearly 3 weeks, and I won't have the same number of meals included as you will. As a guideline, I work on £50 per day. You will need money for tips - Tour Managers (£2-£3 per day), and then you will also have the local guide, the bus driver, and possibly a busboy too! Your porterage with JY will be included so you don't need to tip whoever takes your case to your room.
On the whole India is cheap, but wine is expensive (£35 per bottle approx!). It is up to you how much you spend on souvenirs etc. - over the years I have tried to cut down and am now a fridge magnet fan. However, you will certainly be tempted in India. As so many of our clothes in the UK are made in India, it is cheaper to buy in India! Check the sizing though, it tends to be on the small side!
As you probably know by now, Indian rupees are a closed currency, and you can therefore only really get them in India. When I did the JY Kerala trip last year, a money-changer came to the hotel. For my trip I am taking a mixture of Sterling and US Dollars.
Hope this helps.
Enjoy.
Cheers,
Hils