I have SBI CASHBACK Card (58K), SC Smart Card (60K), Axis Flipkart (1.78L) and IDFC WOW (10K FD). I get a net salary of 60K (HDFC Salary Account, started earning a year ago). My CIBIL is 771. What cards can I apply on C2C basis? Also can I upgrade the variant or limit any of my card on C2C basis?