Anti ageing and skin texture. Greatful.

Hi doc..i am(37 yrs.).. i have oily skin with pits..now i am not suffering from acne.i am using vitamin c serum from the last 21 months..it has cleared up my pits to the great extent. I am using retino a 0.05as an anti ageing agent from the last 9 months with no irritation,redness or peeling. My routine in the morning....face wash(cetaphil),vitamin c serum followed by a suncreen At night..plum aloe vera face wash..pea sized retino a 0.05, olay serum and finally sebamed q10 cream My concern is...1..is my routine ok.. if i should change some produts or include anything then please suggest 2..can tretinoin be used for long period?? 3..please suggest a suncreen for oily skin. Sorry for the long query... if u answer i'll be greatful...thanks un advance