A.Those who belong to Svami Desikan sampradayam, must undergo samashrayanam only to an Acharya from Svami Desikan sampradayam. No harm in performing the samashrayanam once again. Must certainly perform bharanyasam.
B.It is auspicious for Salagrama murthi to be at home. And one must certainly have Salagrama at home.
C.Even though it is not yet one after the attainment of Paramapadam by your father-in-law, since Shubham must have been completed, you must perform daily Tiruvaradhanam.

