The mutual consent divorce is on terms of parties and takes 6 months around to settle and Maintaince and other claims are decided by parties and settled.
If you go for contested divorce on ground of cruelty the same is needed to be proved and it takes around three years or more ,court decide alimony maintenance in this on application of wife seeing your salary her salary qualification.
There can be other false cases against you.such as 498a domestic violence and they can increase legal hassels. So it's better to go for mutual consent divorce.if your wife agrees.