Its also possible to get 99 range at 10hp. Theres a thread on zybez about a guy trying to get 99 range, and 99 slayer at 10hp. I think he is 90 range now.
i tihnk if you had no other stats besides 99 mage you would be cbt lvl 16
i know for prayer if you just lvl that up to 99 your lvl 16 not sure if its the same
Remember you can train attack/strength/defence with genie lamps and quests. You'd just have to train it like slayer. Ranged can also be trained with a canon. Nice pic.