Do You Need A Manager?

Today we have Keio - Keio has been in Los Angeles for two years, having moved from the Austin market after a dozen jobs in Texas.  He recurred on a series.  Did a couple small roles in bigger movies shot in Austin and did a fair share of local commercials.  His Austin agent sent him to an agency they were affiliated with in Los Angeles and Keio has kept working the last two years in LA.  He has a few commercials under his belt.  One that has allowed him to not need a survival job.  He has done a few co-star roles on network television and just did his first guest star for a show on Netflix.  He is happy with his agency, but is wondering if it is time to add a manager to the team?  Trade up to a bigger agency?  Stay the course?  Let get into it.