We can't exactly tell the difference between premium and free scripts....
when starting an account just get an auto fighter and kill men in edgeville for herbs, you make arround 50-100k an hour p2p, otherwise go thieving until level 40 something and go master farmers also around 100k an hour.
I do suggest taking premium scripts, main reason is because i find people who make premium scripts have more ownership over their scripts and push updates more often (daily). Probably because it's a source of income.