Well realistically it's inefficient to mine copper to a very high mining. I did iron until 80 and now I'm just waiting until there is a working LRC bot. However, to avoid detection you should ensure that you don't bot 24/7, ensure you take breaks from it like you would in real life. Go off and bot something else for a bit. I usually have the bot off while I work/sleep. To almost have a "sleep period".
Ensure your mouse setting are not accelerated in the bot client as this is a dead give away to jagex if you're moving and clicking perfectly in milliseconds. And of course keep an eye on the bot to ensure that it is not fucking up for hours on end.
And this isn't a thing that's recommended by most but I like to bot during night due to the low player count and I do so on a low pop world. This keeps reports down. However, Jagex will detect it if there is fishiness.