Wait for the preview period on healthcare.gov before making any decisions. In half of the states Silver-tier costs went
way up while Bronze and Gold only went up a little. This year especially it will pay to shop around, both on the exchange and with the insurance companies directly. A broker will make it all easier to navigate.
Also keep in mind that you may qualify for subsidies, depending on how much your business makes. At least run through the basic calculator on healthcare.gov to find out. The number that healthcare.gov wants to know is your AGI (form 1040 line 37) which is after all of your business expenses and retirement contributions. If that's less than 400% FPL for your family size you'll get something.
Edit:
Maryland has opened their plan preview tool. You just have to plug in your family size and your income and it'll give you an estimate.