Hi sam, you're welcome.
1. With the current depressed economic climate in both Oz and Europe, it is cheaper to pick either CASA or JAA but not both, depending whether you are able to work in Australia. However, if you do both in Oz, I am aware of two schools :
WA Aviation College (WAAC, well known, established school)
WELCOME TO THE INTERNATIONAL SCHOOL OF EUROPEAN AVIATION (newer school, please research these forums)
2. You've got enough qualifications/hours, no need for uni courses.
3. No need to tell me how much you're spending; just make sure you have enough.
4. RVAC at Melbourne and Basair at Sydney have tonnes of Indian students, but not everyone approve of their methods (research these forums). Otherwise, many other schools are very international, including WAAC I mentioned above.
5. OK.
I am aware of other schools who are planning to offer JAA in the future as well but at the moment it looks like your main choice is WAAC. They have reasonably good accomodation facilities close to Jandakot Airport (I can confirm this as I have stayed in them).