<< been reading a little about the Beverage antenna but with the moderate slope I don't know how it would work. >>
You can certainly slope Beverages. Take a look at the photos of mine near the bottom ofhttp://picasaweb.google.com/katie65752/BeverageAntennas#
I've heard of others with a lot more slope that I have here, and they still were good performers.
I've heard it said that Beverages "want to work". In other words, everything doesn't have to be just so for them to work. They can run up and down hills, following the terrain. They don't even have to be in a perfectly straight line. My NE-SW Beverage probably has 15 degrees of variation in direction along its length, since that one mostly uses the available trees.
I don't know how much room you have in the desired directions, but a one-wavelength antenna for 80 or 40 would be a lot of fun. Mine are 580' (one wavelength on 160), but they still work when I'm Dxing the low end of the AM broadcast band.
I suggest the 4th edition of ON4UN's book "Low Band Dxing". (earlier versions have a graphics editing error in the diagram of the 2-wire switchable direction Beverage). Also, w8ji.com has some good info on Beverages.