1. If you don't wanna access internet on it why a Windows phone in the first place? A series 40 phone from Nokia or a Walkman phone will be better for your kind of use no.. Is there a specific reason you want a Windows phone?
2. I think you can go up to 2GB I'm not sure of it. I use 1GB miniSD card on my imate SP5m. The 1GB Transcend miniSD card costed Rs.700
3. I bought it for Rs.11k a week ago.
http://www.indiaplaza.in quotes it at 10.6k
4. Bluetooth can be used to transfer files.
5. I'm not sure of this. Have to check it out at
http://www.microsoft.com/windowsmobile
6. Very much if the first point is invalid i.e., you are going to extensively use it for internet. Otherwise you could look at phones such as Nokia 6300 or SE K750i.