Greetings Culley,
Hmmm, are you sure you want to plant blue spruce? I would suggest an alternative conifer seeing that blue spruce on heavy textured soils usually results in poor growth and future insect & disease problems.
Regardless, if this is the route you want to go, I would plant one row of n. white-cedar and one row of blue spruce. You can plant either bare-root stock, potted stock, or balled burlap. I'm a big fan of planting trees in the spring, especially when it involves conifers (to protect against winter dessication). Space the trees 10-ft apart between the two rows and 8-12 feet apart within rows. You can pack the white-cedar a little closer because this species generally has a more columnar growth form.
Regarding maintenance, I'm a big fan of killing-off any grass with Round-up around where I'm planting the tree. Apply the Round-up before you plant the trees. If mother nature doesn't cooperate with adequate moisture during the establishment phase of your tree planting project, then I would suggest watering the trees during periods of limited rainfall.