Ok, you have a group at 75 and 225 magnetic, that's ca 150 degrees separation. Look at page 7 of the DB8e specs
https://www.antennasdirect.com/cmss_...s/DB8E-TDS.pdf - that shows the two arrays at 75 degrees off broadside, or 150 degrees separation. This gives you about 10 dB gain at these axes, which should pick up all those stations if you mount the antenna in clear air with no obstructing trees or building in the LOS to the transmitters.
Rather than the VHF retrofit kit, I'd use an Antennacraft Y5713 on the same mast, and combine it with a UVSJ
http://www.solidsignal.com/pview.asp?p=uvsj if you don't want a preamp. That's the same setup you'd be getting with the VHF retrofit kit, but you'd have a lot more signal. The VHF kit would probably work, but you are getting the small add-on dipole and a UVSJ, same as the link above... except it will say "Antennas Direct" on it.