*Some* people benefit from poles in *some* circumstances.
The OP stated that the OP benefits from using poles on ascents and descents, tho OP doesn't specify how steep a grade. Others have pointed out here that the OP's route doesn't seem to have a lot of elevation changes, but only the OP can say whether the route looks flat enough to forgo poles.
And, contrary to statement, there *can* be a downside to using poles.
If, oh, say, a person using hiking poles finds that they do indeed relieve stress on the legs, but at the cost of aggravating an old upper back injury to the point of being unable to shoulder a day pack? (True story).
My choices on the Primitivo were: a. use poles, ship pack, chew aspirina, and keep the day pack on the right side, or b: don't use poles, still ship pack, wear day pack, and watch the left knee swell and stiffen up. There's a reason why the last 30km into Santiago took me 10 hours.
Either way, hopefully the OP has an answer they can use, although if they're not familiar with profiles, it may still be a challenge.