If you are going to use power saws, you need extra parts to be available, identical saws are preffered by any prudent sawyer, as one can be canibalized to fix another when 2 or more break down at one time, and as a professional sawyer at one time i can tell you for sure that i always took 3 saws into the woods, cause when murphy finds you 2 generally go KAPUT the same day, and i never hadd all 3 down, I was however closer to town and parts were availbel by driving to the saw shop.... fuel filters, air filters, a full carburator, plugs, spare oil and fuel caps, clutch parts... are the ones that are easy to replace.
If you are buying rolls of powersaw chain, do not forget a chain breaker, spinner, and rivets.
A log tape is also valuable as well as as repair kit for them, again as a a one time sawyer i can say the teeth on a saw will catch the tape and render it useless at least once a season, and more over probably several times, since i used more than one tape on the landings at times.
add a motorcycle muffler to the list..... for replacing the small enigne muffler on the genset.... make it quieter.....
air compressors add life to your equipment.... blow the sawdust out daily....also works as an air shower for clothes.
I see you have "blue" chalk, I prefer da-glo orange chalk, which can be used in conjunction with blue, and can be seen way better in all conditions.... I have several chalk boxes of the 2 colors on all jobs.
If you intend to use the recipicating saw very much you do not have enough blades for it at all, Ive seen more blades than you list broke in a week on some jobs.
Long drill bits, 3/8, 5/16, 5/8 installer bits are VERY useful in many applications, and used with a brace as well as an electric drill, i would have at least 2 of each cause they do break or bend if pryed on..... 18 inch is fine.
Forstner bits are better than paddle/spade bits for lasting, auger bits can and should be sharpening with use, a small diamond pocket stone works for me, and i carry it daily even when not building.....
I keep looking at your planer list, I use a small jack plane, 6 inch, more than any other and keep it sharp, I have 2 that i keep on the job, and carry one in my tool bag at all times [my tool bags weigh more than they should, but the 6 foot rule applies] I even use it to sharpen my carpentar pencils with to keep a proper sharp angle on the tip..... I go thru more pencils but my lines are never off.
Suspenders for your tool bags, get the ones that dont have much elastic, it helps keep the weight off your hips and up on top.....
Stair gauges, Starret model 110, they attach to your large carpentar square, if you understand what a 7/11 stair is you can make good use of a set of REAL stair gauges, and if you plan to cut your own rafters, stir gauges work for that as well. I would also recomend my friend Marshall Gross's book on roofs titled Roof Framing, which explains the use of the gauges in a couple of applications.
A veritas scribe tool, it will aidyou in scribing any linethat needs a custom fit, I use one for full scribe log house building, and for cabinet installing in any type of house. a very handy tool to have.
I would also get a second framing square, myself i have 4 so one is never far away on a jobsite, I also use the sawanson speedsquare, in the 6 inch and 12 inch models for roofing, but the big one can also serve in logs walls as well.
The cable you have is small for skidding anything with, and will wear out considerably fast, you may want a second roll of it on hand, depending upon how often you can get out or another roll brought in easily.
Does you plumbbob have a replacable tip? if so get a spare tip, cause ineveitable things happen....
utility knives and blades, many uses.
framing hammers are good, I use a Vaughn 28 ounce, but in log building ifyou need to drive a spike, a blacksmith hammer works better, 3 pound head, or 2 pounder. I am a firm believer of having the right hammer for the job, and have several different weights, 16, 20, 28 that are in the tool box, along with the blacksmith hammers, and the heavier mauls.
If you want i can go thru my tool kits, and email you list of what i usually carry on every job, but not needed on all of the jobs just those tools never leave my boxes, everything has a place and stays there except when in use, and gets returned there...... and i know where a tool is when i need one...... "film at eleven"
William