Lol... Range Tanks overcome any pkers at any lvl they play at(cept 110+)! It's simple as that.
If you want the pk's invest in arrows and learn how to shut down your brain while training ranged (cause you'll need it).
70 def, 80 ranged, and 44 prayer. Would be something you could do without wanting to throw your pc out the windows. Or you could spend 80m like I did and make a 85 def 99 ranged tank.