Their isn't any cutting involved for fitting in auto transmission. You can get bolt on fit for auto tranny of g13b Suzuki cultus jdm or alto vxr jdm.
Rest power steering will cost you around 15-18k
Power windows around 15-20k
Auto transmission and installation around 35-40k
Quoting about high quality works.
70-85k is alot of amount.
If you can pay this amount i would recommend go for it.
Else just do power steering.