The proposals what you have mentioned seems to be sound enough for going ahead, however there is nothing wrong in taking a cautious step especially taking a second opinion from a local lawyer by paying his fee so that he will be able to detect any hidden danger out of the papers submitted before him in this regard.
Various stages under Slum Rehabilitation Authority:
commencement certificate to the first building for work upto plinth are processed
After demolition of the structures, work upto plinth is completed.
After checking the plinth dimensions, further permission to carry out construction beyond plinth is granted.
Plans for the further buildings both for sale and rehabilitation are then approved.
Building permissions for the sale buildings are given in the proportion of the permissions given to the rehabilitation buildings.
Upon completion of rehabilitation building/ wing, list of allotment is drawn up. The allotment is done in the joint name of the head of the household and the spouse.
Building completion certificate is submitted by the architect.
Further construction of the remaining building/s is then taken up.
Further building permissions as well as occupation permissions to the buildings is then granted in due course. Upon completion of the last buildings in the layout, the underlying land is transferred on lease to the society of slum dwellers.