Please be gentle, I still don't have an HF radio yet, so I'm looking into antenna ideas for the fateful day I have enough saved up. Having done maybe 15 hours of research, given HOA and wife constraints. I'd like to install a permanent windom on the roof. I have acreage and trees out back for an 160m dipole, but that'd be temporary, on the weekends. So, for the permanent wife-approved scenario, I've chosen a 40m Windom off-center-fed dipole with 4:1 balun. Installation will be on one side of a roof with about 2-foot offsets at ends and peak. Peak (feedpoint) will be 17' above ground, and ends suspended at 12' above ground. What can I expect? worth the effort? will a 3:1 balun be a better match for this height?