So, I am a big fan of self-hosting things in general (I even wrote an entire tutorial on how to do so with n8n).
That said, sub-workflows alone shouldn’t be a problem on n8n cloud. This is because only the parent execution would be counted. So even an execution like below (using these example workflows) would count as 1 execution, despite the sub-workflow running 37 times:
Just wanted to clarify this.
I am really glad to hear you enjoy n8n though! Let us know if you run into any trouble with setting up your n8n instance 