If I uninstall Luci and install Luci-ssl, will that give the gui but only access via https? Is Luci-ssl just an add on of Luci and you need both?
Both are just empty metapackages, making sure that the correct dependencies are getting installed. Via px5g luci-ssl will make sure that a self-signed ssl certificate gets generated, put into the correct place for uhttpd to fine and that http connections are redirected to https.
To add to the advice, do not uninstall luci.
Luci-ssl actually depends on luci package...
(Luci-ssl is just Luci plus px5g and ssl library support.)
PS sometimes the autocorrect in tablet input is frustrating...