Personally I would recommend a script that doesnt require a botting client. Whenever I've used a botting client I got banned fairly quickly. Whenever I use Gary's Hood autoclicker or Fluffsoft in the normal OSRS client I hardly experience any bans.
Theres always going to be a risk when botting. 70 cb stats seems reasonable time without getting banned wont take to long. Script wise I would use paid ones.