Idea sounds good but you need to make your own experience as an entrepreneur. As an angel you will get tons of good contacts and a general notion about upcoming

Idea sounds good but you need to make your own experience as an entrepreneur. As an angel you will get tons of good contacts and a general notion about upcoming trends and who is working on what, what ideas works and don't work but you don't know why because the information asymmetry between you and the founding teams is too strong—they don't tell you the entire story why something failed. Being an angel on one or two ventures beside founding oneself is definitely a good way too make good contacts. But just being an angel could get boring and too abstract for somebody who haven't done it himself.