My prediction is there will be more pressure for smaller employers to over the plans you mention. Whatever the case, it is what you have, and you should understand it better. Talk with the Edward Jones accounts manager (or their rep that deals with the employee plans with your business) and directly ask what fees are associated with it, commissions, cost to own the fund(s) you selected etc. That will help you decide to max out the simple, or get a separate account with another company.
You are talking the company three percent, excellent! Continue that.
As an aside, I work for a large organization that offers generous matching funds. It surprised me to learn a significant number of employees were opting out of the plan and losing the money that came with it!