I think you're getting wayyyy--- ahead of yourself. You've never delved into anything like this and you're already thinking about gold rates

. Another suggestion is to take things very slowly, as you said earlier, one or two bots for a while, get to know the scripts, and then make a decision based on your knowledge whether it would be worth the time & effort for the rsgp.
It seems the more effort you put into the bots, the greater rewards at the end, however obviously, the more annoying it would be when you get banned. Just take that into consideration, whether you want to maximize profits or quick GP.