(10-8-2022) 169.
(12-9-2023) So it was already a year after. I was kind of not aware, that I have been an online pathologist for such time already.
I like this level's design quite much as in other mrmonkey's levels. Hope more can appreciate this level.
The solution seems to combine all the parts you were thinking of but tried in all different routes. (that are usually 2 off :P)
EDIT: rebeaten. Love this one!