Income Tax liability age and income relief

Dear Mr. Sreekanth ji, Greetings and best wishes to your good services. My date of birth is 26.July.1957. I am for the first time liable to pay income tax on my FD interest receivable from FY 2017-18 which may be in the range of 10-12 laks. Your generous and good advise, as usual, is sought on the following: 1) Am I eligible for senior citizen category while paying tax for AY 2018-19? 2) What is the cumulative deductions allowed in my case under all available provisions - I can invest in ELSS, also paying LIC premiums, going to purchase medical policy for self, spouse and one unmarried daughter (son may not be eligible as he is above 20 yrs age). Any other investment can be considered if eligible subject to your good advice. 3) As this is my first time and rough calculation by myself of interest receivable (requested the banks to provide estimated interest from FDs) put me in 30 percent slab? How can i reduce the interest income to fall under say 20 percent slab? Await your valuable suggestions and advise. Regards Gilbert