Where in NE Ohio are you planning on hunting? Ponds, marsh or on the lake?
The lake will be mostly pass shooting... mostly. If you're layout shooting, it will be fast. The birds will be in commute mode and the time you have from when you sit up 'til your shot is small. Also expect longer ranges.
Marshes just off the lake will depend on the weather. A blue bird day will see a lot of ducks sticking to the big water, whereas a south wind will push them to the cover of the marsh. Then it will depend on your set and the marsh you're hunting. Pick out a few landmarks before full light to get yourself a gauge on distance. If the weather is right there will be a big morning flight as the ducks move to feeding grounds. You'll hear the murmur before sunup and the games will begin. About 20 minutes of non-stop action and, depending on where you are, thousands of birds in the sky. If that doesn't get your blood moving, check your pulse.
Ponds normally get more ducks landing. Easier shooting as you can hit them as they land. They'll stall as they come in and provide an easy shot and a good chance at a double as the rest pull up the landing gear and try to gain speed. Just don't pop one in the breast when it flairs. The best shot there is if they come over you and you can shoot right through the back.
If you need ammo, spend the extra bones on Bismuth over steel. There are other 'heavy shot' loads as well, but Bismuth works as well as anything that isn't lead. A couple boxes of #4's and a box of BB's in case you get a chance at some geese.
Swing through and have fun.