Coming back to RS3 with range tank

So I kinda miss RS and I haven't played since EoC came out. I've already made a new 07 pure but I dont't want my range tank lying around.

I was wondering if it's possible to PvP with the range tank, I have no idea how the new combat system works but willing to learn. What do you guys think I should do with it or if you have any tips.

I have 99 range 70 def 94 mage lunars amcients and all that stuff. Only 52 pray but alot of money.

All input is welcome please!!! and thank you!!

 

Perhaps on Legacy mode

 

I am going to try that, do you onow if there is alot of people