Suggestions needed on road guide, road cond. from HYDERABAD to MUMBAI

Hi All –

I & my wife are planning to do road trip from Hyderabad to Andheri (W), Mumbai along with our 2 yr old kid on Maruti Ritz ZXi. The date of travel would be Saturday 6th Feb, 2010
I know the trip is around 700+kms Couple of questions:
1. How much time will it take?
2. What time is best advisable for me to leave from HYD? Will early 5:30-6am be good to be in Mumbai before eve?
3. What is the best suggested route map?
4. How are the road conditions?
5. Hope there will be good pit stops & eating joints en route this route? Any suggestions?

Any more advises as I’m travelling with my 2 yr old kid? Kindly assist with all necessary points I should know

Thanks All