How to treat ndata that is unlikely to change

Hi everyone,
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Please see the image above.

I want to build a tracker in which I have to register the head of household, the number of people living in the household disaggregated by age and sex. As the number of people living in the household disaggregated by age and sex is unlikely to change over time as we follow up with the households, I am thinking of creating these disaggregations as tracked entity attributes as follows:

Profile

• Name of the head of household
• Number of people living in the household
• Female 10-14
• Female 14-19
• Female 20-24
• Female >25
• Male 10-14
• Male 14-19
• Male 20-24
• Male >25

Would it be right or advisable to do this? Looking forward to some advice

Thanks