Is it a good idea to use loki and grafana alerting for user and entity behavior analytics for small project like 5000 users generating data

Was playing with loki, i’ve already using grafana and prometheus stack for metrics. And just wondering is it a good idea to push different logs(access logs, app logs) to loki and analyse it(UEBA), creating alerts for example if user downloads to many attachments for period, or using api to gather all information(like using paging heavily to pull all data) e.t.c.

I was looking for ELK, but elk looks to heavy for me