Hi Cody- I run two businesses, one of which specializes in synthetic turf installation. Here is what you need to do this type of project:
Excavate to 8-10" and install geo-textile soil separation fabric and 6" of compacted crushed stone (don't skimp on the stone, you need the drainage). Install 1-2" of fines/quarry screenings over the crushed stone to create a smooth surface for installing the turf. Nail the turf using 3" nails right into the stone. Infill the turf with #00 silica sand +/- 2 lbs per square foot. You'll need a drop spreader for this and a stiff broom to sweep the sand into the fibers, a little bit at a time. The weight of the sand and the turf will hold the turf in place. If you have dogs or rambunctious kids, consider adding a nailer to the perimeter for more security. The turf is usually sold in 15' widths, so consider this when laying out the job.