CMS Theme recommendation

Hello, I am working on a volunteer project for our local cemetery where the loved ones can find the deceased information, i.e., date of date, date of burial, burial ground lot number, etc. The search functions should be at advanced level which users should be able to find them by anything that they could remember, not just the name and date. Also the statistic data should show on the web, i.e., how many Men, Women, Boys and Girls were buried within certain time frame.
Any recommendation for a suitable themes would be appreciated.

Thank you.