I do something similar but playing on PS4 I don't have a computer nearby to do spreadsheets, I keep my records all by hand in a Moleskine notepad and use highlighters. Writing and keeping notes by hand helps me keep my sanity as I find it very soothing. Also gives my eyes a break from staring at the screen.
Nice build quality there. I dropped the note pad and pen months ago, just made the game feel WAY to much like another job and would get frustrating and time consuming. Now I have a few builds with different play styles to change it up every once in a while. I keep an eye out for gear & attributes values but generally when I find a nice piece I just hit the share button cause build mode can take over and forget that I should be shooting, melee smashing & the occasional grenade toss.