Replacing bin package by source package

Hi, I recently adopted the helmify-bin package and pushed the new version to aur. But since it is a bin package, I decided to prepare a PKGBUILD the uses build-from- source along the go packageing guidelines. I'm indenting to push this new ebuild and orphan the bin-package once this is done. Before pushing it: I'm wondering whether i sould set "replaces=("helmify-bin")" or "conflicts=("helmify-bin")" in the new PKGBUILD when I'm trying to say "dear users, blease use this new package instead of the bin package". Any thoughts? Thanks in advance! -- MfG Jan