Hi,I have to sites,the one at farm has awesome wind,cant keep you ball cap stuff,gets gusts from river and highest point around,how ever its at my farm and don't need much power there so just a micro mill ,amtek 27 foot tilt up 30 feet to batteries.1.5 inch pipe pivoting on a 2 inch stub tower with a sch 80 1.5 inch galv pipe inside in
concrete pad.
http://www.fieldlines.com/story/2010/1/11/20737/3743Other site is my home which is a larger micro 500 watt am building a 42 foot tilt up sch 40 2.5 inch pipe will be 48 volt 100 feet from batteries,problem is don't have much wind there 10 -15 mph 3 days a week or so,but will help out the solar panels some.
I think you cant go wrong over building,lots of power in that wind. good luck to you.