Education : Tier 2 B.Tech.
YOE : 7+
Current CTC : 40 LPA all fixed
Location: Remote

Offer : IBM ISL
Location : Bangalore
CTC : 48 LPA (Including PF and Gratuity)
JB : 12 LPA (6L in 1st month, 6L in 13th month)
Relocation: 25K reimbursement
Variable/PB : Depends on company performance (Avg 10% as per HR)

Total comp(Fixed+Bonus+PF) : 58 LPA
Band offered is 7B.
This is max after negotiations.

please help me with few queries.

1. How is this offer ?
2. Is it worth relocating to Bangalore for this offer?
3. How's the work life balance/work culture in ISL division?
4. What are average annual hikes in IBM?
5. What is average Performance bonus/Variable pay can be expected?
6. How long will it take to be promoted to Band 8?

Thank you in advance for your inputs.