Topband: Beverage advice?

[Fred]

I'd like to try a beverage, but my options are fairly limited.  I live
on 5 acres, however not all of it (very little, actually) is available
for the "antenna farm" I and urban dwellers dream of.  I think I could
get about 250 - 300 feet installed.  Questions are:

1.  Can the feed end be at or above roof height (it needs to go over a
driveway)?

2.  QTH is Auburn, CA (about 35 mi NE of Sacramento at 1,700' in the
foothills of the Sierra Nevada).  If I can have only one wire, which
direction should it run?  (my choices range from NE to SW.  Other
directions are through an oak and pine forest)

3.  There is a 145KV line running NS about a half-mile east of my
property.  The noise on HF rises somewhat when I point the triband beam
east toward the line.  What kind of effects would this have on a
Beverage running EW (toward the line).

73,
Fred, K6DGW
<k6dgw@arrl.net> or <k6dgw@pacbell.net>