Welcome to the world of open carry Mike.
Please go to the maps area on this site and click on the "Open Carry" map. Once there, click on your state. That would be a good beginning as to understanding the laws in your state. Also do an internet search for the gun laws in your state.
As far as I can tell after doing these things myself for your state I believe the law allows for you to openly carry a sidearm into the store. Don't just believe me though, please research it for yourself.
Always remember that the act of carrying a firearm is taking on a very serious responsibility. By default you are taking on the responsibility to defend not only yourself, but all those unarmed citizens around you. Take not this responsibility lightly. If you wish to carry to look "tough" or just to feel like you "have something over everyone else", I admonish you, (and everyone else here for that matter) to PLEASE NOT carry. Ponder your motives for carrying, are they for self protection in an unsafe world, or are any other motive at play? Are you willing to behave in a manner that draws respect, or are you planning on behaving with arrogance and (excuse my wording here) ignorance? I am just pointing out that with the right to bear arms comes great responsibility. If you have in any way an infinity to use anger, and are not in control of your emotions in ALL settings, carrying may not be advisable. A sidearm is NOT a toy!
With all this said, I again welcome you to the world of open carry, and wish to say that if you are mentally prepared, and have great respect for the ramifications openly carrying holds, you will be a great asset to your community in practicing your 2nd amendment rights. I am 50 years old and have, on and off, carried openly since I was 18 in Arizona. Good luck and PLEASE be safe and carry yourself well in the public eye.