Jimmy, that is a very nice, clean install. Do you have any indicators [temperature gauge] for when the hot water is getting too hot?? If you have an aquastat in the system, usually they have an 'over heat' circuit too.
If you end up having the overheat/overpressure valves opening a lot, you can do a few things to take advantage of the excess hot water.
One is that our homes are often very dry in the winter. You can run a bathtub full of hot water or run a shower on hot, this will add an equal amount of cold water to your tempering tank, and add humidity to the house. I've done this once or twice when I got carried away with a fire in my boiler and it was approaching it's boiling point. [My boiler is not pressurized, technically a hot water furnace]
If you end up with an overheat often you can add a length of baseboard finned tubing to the return line and put a zone valve that operates with the aquastat's overheat circuit and circulates the water through the finned tubing to drop water temp and recover some of the heat into the house.
Just some ideas, Greg L