if this account purely from bottng wasnt safe, i dont know what is counted as safe
I'll give you some tips:
Never bot overnight it's the biggest mistake you can ever make lol.
Never bot a tedious task for too long as it makes it evident that either your name starts with lynx and ends with titan but Jagex will probably assume you're botting
You said you were going to use mirror mode Yes make sure you do use it as it decreases the chance of a ban substantially.
I wouldn't keep much wealth on the account i'd keep it on a safe account.
Secondly i would also reccomend talking ocassionally in public chat or an fc like Mod Mark or maybe to a friend in pm whilst you bot and babysit (not always but frequently)
Thirdly, I would reccomend you dont always go full out on one task meaning do 1h of combat then 1h of fletching etc.
Finally, I know this may be a pain in the ass but I would play legit for about 10-15 mins to throw off your player's pattern and play like you're tired af lol by not being consistent i.e "Slacking" ;)
Good luck man I'm trying to get a max main out of this botting from scratch and hopefully you can achieve a milestone!