Will an attic antenna installation perform well in your situation? Probably. As long as you are interested in the stations at magnetic 200 or thereabouts.
You should be aware: effectiveness of an attic installation is difficult to predict. There are too many unknowns, in the material of the roof and structure, trees and buildings and other obstructions on the other side of the roof, and conductive and/or noisy wires, pipes, chimneys, etc. that are part of the building. Antennas are designed to function in free air, and you can change their electrical characteristics by placing them in other environments. Some building materials are more transparent to signals than others. Stucco, for example, contains wire mesh typically and is basically opaque to TV signals.
The obvious combination for VHF high with a DB8e is an Antennacraft Y5713 or Y10713. The main difference being the Y5713 has a 5' beam length and the Y10713 has a 10' beam (and is more sensitive to VHF high signals).
To combine these, you need a passive combiner, a UVSJ, or an active combiner, a preamp.
http://www.solidsignal.com/pview.asp?p=uvsj
http://www.amazon.com/RCA-TVPRAMP1R-.../dp/B003P92D9Y
There is always the question of signal amplitude vs. signal quality. Any preamp will degrade signal quality slightly (< 3 dB), but will give you plenty of amplitude. A UVSJ has a minimal signal degradation (0.5 dB claimed) but gives you no boost in signal amplitude.