Check and see if u can lvl up range with out lvling up a combat. U should be able to now.
So i suggest you soul wars range up to match with your strength and pk with that. So u prevent getting higher combat level of what you should be, because you range extra hp experience.
I also have a f2p pure. Although i don't like to play range 2her i still soul wars range because for one, i don't raise any combat level. And i get access to vambraces. Although it gives little bonuses. it better than nothing.
I would raise range up just because u don't gain any combat level. And mage up also so u can tele block. Don't just stick with straight up strength pure because u don't know when u are going to need to hybrid some one.
Plus it fun to play range or mage once in a while. U lose nothing for leveling those skills up. But you can gain so much access to different pking style and have a higher advantage over most Single combat style pure. Everybody should know by now that Range 2her, if equal, will most likely beat a strength pure if both pkers are equal in skills and stats . Simply because range is deadly against 1 defence pures and with 2hers as a ko weapon u are most likely to get a kill. Having mage give u the advantage of Tele Blocking and do constant damage to defence pures. U can also have 2her as a ko weapon but it is difficult to use against defence pures. And plus, u wont have to be bothered by annoying combat protection prayers. If some one pray mage, go range or melee. Etc for the others.