Regarding the DB2e or DB4e - you don't need the dipole kit unless you want to pick up real channels 7-13. In your area these are pretty sparse... I'd likely skip them to start.
http://www.amazon.com/Antennas-Direc.../dp/B0074H3IU6
http://www.amazon.com/Antennas-Direc.../dp/B0074H3JCS
If you mount the antenna in free air above any obstructions from the building, surrounding buildings, or trees, and aim it south-ish toward the station's antennas (ca 200 magnetic), should work splendidly.
You could have issues if you use old cables or other junk left over from your cable installation, or point your antenna into a neighboring building or trees. But if you have a straightforward clear air installation with new cable and no amplifier, any of these antennas should work splendidly for you.
I would skip the Lava because you don't need to be "omnidirectonal," but mostly because of the impossible advertising claims they make.
http://www.solidsignal.com/pview.asp?p=hd-2805
https://www.google.com/search?q=site...m+lava+antenna