Thanks. I appreciate it.Yes, 5 feet sticking above ground. Final height adjust was with chainsaw. I seal the tops of the posts with black roofing mastic. 2x6 rails are on 15 inch centers. The rails are 16 footers and I alternated the cuts so they weren't all on the same post.
The posts I used are NLA in California. The posts I used posts were treated like wooden telephone poles; pressure treated with cosmoline IIRC. If you are going through all the trouble to build a new fence find a source of worthwhile posts, even if you have to order them from out of state. And fence rails are screwed in, not nailed.
Scott
Round or square posts? I planned on using 6x6. More meat to fasten to.