Q.which plants to use
I have a large front porch with very tall ceilings and very tall doors. I have pots flanking the front door. My question is what to plant in the pots. One pot gets full morning sun while the other is fully shaded. I love the idea of using some sort of evergreen that looks good year round and then using seasonal fillers.

Container plants are a wonderful way to decorate a porch.
I would suggest visiting your local garden centers and see what is available in your growing zone.
Here are some links with more information.
https://www.gardeningknowhow.com/special/shade/shade-tolerant-flowers.htm
https://www.gardeningknowhow.com/special/shade/plants-for-creating-shade-containers.htm
https://www.gardeningknowhow.com/special/containers/thriller-filler-spiller.htm
https://www.gardeningknowhow.com/special/containers/container-plant-watering.htm