I defiantly hear your concern about there being lots of moving parts. I thought about having one monolithic platform that you could drop and run to help deployment ease. But after spending some time with Kibana and Elastic Search lately I was really inspired by having things decoupled, once you have that flexibility you can do lots of cool things.
As a developer, the stack you're describing sounds great. As a sysadmin / devops, I'd be a little careful installing something with this level of component complexity on top of fail2ban. Ideally you'd want something very lean with as few moving parts as possible. (after all, if something goes wrong, you can end up locking yourself or your server).