If so, are you installing and then duplicating them to USERPROFILE folder?
During (minor/major) upgrade, will those in USERPROFILE folder be updated?
During uninstallation, will those in USERPROFILE folder be removed?
Don't jump to custom action hastily. For every custom action created, you will need 3 more custom actions (1 rollback custom action, 1 uninstall custom action and 1 rollback for uninstall custom action). You will have to consider how these custom action should affect during upgrade.