Custom visualisation of a network

I would like to visualize a network that shows the job flow within an organization.  

What I think I need, generated dynamically based on a dataset: 

• Nodes with jobs and arrows which are the job flow. 
• To change the size of a node. (max job population) 
• Change the color of a node. (current job population) 
• Change the thickness of an arrow. (amount of flow) 
• Hover/clicking tools on both the nodes and arrows. (for details) 
• Grouping nodes into one node. (for very large datasets) 

I found several visualizations like Journey Chart, Social Network Graph. However, I’m still unsure which I should use or whether it is a good idea to use this kind of visualization at all for the job flow as I’m still rather inexperienced. 

Is this feasible in Power BI? 

Any changes required to get it to work or to make it better? 

Is this a good idea at all, any recommendations for other visualizations? 

Below is an example mockup: 

Extra info: Power BI is connected with a Neo4j Graph-database and the data is gathered with a cypher query.