You can still use chins if you are 1 defence... what is your prayer level?
If you can afford to chin until 99, I would HIGHLY reccomend it. Getting 78-99 ranged took me only a few days playing 6-8 hours per day. It is extremely easy and you can AFK too which is great. If money is an issue, you can try using knives at a multi combat spot like bandits, or take them to a low level - high HP monster like Experiments or Yaks. The other spot for powertraining to 99 is the ogre cage above Ardy. You can train there with knives, iron arrows, whatever you want and its decent exp.