I have the perfect ladder for you.
https://littlegiantladders.com/ladder/lunar/ I used to use this ladder at work before I changed departments. The first version had little triangles cut out between the rungs. That version went away because it was a little twisty. The current version is a bit heavier but still lighter than the Werner I used for my 1st 15yrs of ladder carrying. The Lunar also has an extra pulley for block and tackle style lifting. The version I used was rated 350, because I'm fat and my tools were heavy.
http://www.sumostanceladder.com/fibe...r-little-giant