Looks very interesting - I have been looking for something exactly like this. Have just spent a few hours setting up a workflow with Instapaper and self-hosted Miniflux to get me to a similar place...
I'd love to try it, but the one thing that doesn't seem available yet is a quick way to save links (i.e. in the read it later workflow) like a browser extension, or, for mobiles, an app. Are those in the pipeline? Otherwise this seems a perfect fit for me.