Would a small brush reach behind the cornice, or should we take it down?

How to say “Would a small brush reach behind the cornice, or should we take it down?” in Japanese

In Japanese

小(ちい)さいブラシでコーニスの裏(うら)まで届(とど)くかな。それとも外(はず)したほうがいい？

Chiisai burashi de kōnisu no ura made todoku kana. Soretomo hazushita hō ga ii?

Would a small brush reach behind the cornice, or should we take it down? in other languages