I wouldn't use yews there for a couple of reasons. If you have any deer, there will be bare sticks all year since yews are their favorite plant IME, the only plant I have had regular problems with as far as deer. Also, even dwarf yews will be larger than optimal for that area unless you want to,fill the front bed with them. Even the smallest yews I am familiar with are 3.5' or 4' tall x 5' wide, somewhat large for that spot.

Adding a combination of an evergreen groundcover (Iberia or Veronica Georgia Blue would work in my area) and a single smaller evergreen conifer near the far corner such as one of the slower growing Chamaecyparis AKA false cypress might work better.

I can't tell from your photo, but if those are rocks, you want either larger rocks or to get rid of them entirely.

The yews to which I refer stay at 2 ft.

For insurance purposes you need a railing on the porch's end. And expand that bed so you have less to mow.

Cultivar?

http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b691