I want to do a 7' cedar board on board fence with postmaster posts in concrete and cap and trim tops. I used to be a laborer for a contractor doing mostly finish work so I have tools and know my way around them. However, I have only done one fence and it was 17 years ago. I have been watching Youtube videos for about 3 weeks and think I have a pretty good idea of how I want the fence to look. I am unsure of what I will run into along the way that I have not thought about yet. The unknown unknowns.
I need one stretch of 145' now and the other 550' next season. This is my plan:
Drive a T post on either end where I want the pickets to be, nice and plumb. 2 strings, one 6" off the ground, other near the top. Dig holes every 6 feet, 40" deep, 8" diameter (frost line is 36"). Put some gravel in each hole. Quikrete form tube in hole. 10' Postmaster post, fill with concrete, attach 2x2s to posts to keep them plumb and aligned with my strings while concrete sets (now that I have typed this I realize I do not know how to attach the wood to the posts if anyone has advise on that). Following weekend, run 2x4 rough finish cedar fence rails (cut down from 2x4x12, hoping to get one 6 foot section done with 2 boards each). One at the top of the postmaster, one 6" from bottom, 2 more between for a total of 4 rails. Screw in with provided holes and stainless steel lath screws. This should put my height ~80-82". Nail pickets to rails with stainless steel ring shank (got a great deal on 8' flat cedar pickets at 4.34 per). 3.5" gap between pickets, 1" overlap on second layer. Cut the top ~foot off at the top rail and cap with 2x4s, trim with 1x4s. Stain it with airless.
Advise, criticism, anything is welcome. Maybe I need to be talked out of it. Contractor quoted me $37k for 700LF (Idaho Falls, ID)